diff --git a/api/rates.php b/api/rates.php
index b2e73a4..6d60047 100644
--- a/api/rates.php
+++ b/api/rates.php
@@ -8,7 +8,7 @@ $ch = curl_init($url);
 curl_setopt_array($ch, [
     CURLOPT_RETURNTRANSFER => true,
     CURLOPT_TIMEOUT => 10,
-    CURLOPT_HTTPHEADER => ['Accept: application/json'],
+    CURLOPT_HTTPHEADER => ['Accept: application/json', 'User-Agent: xmrpay.link/1.0'],
 ]);
 $response = curl_exec($ch);
 $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
diff --git a/i18n.js b/i18n.js
index dfd9c94..b911650 100644
--- a/i18n.js
+++ b/i18n.js
@@ -115,7 +115,7 @@ var I18n = (function () {
       var code = navLangs[i].substring(0, 2).toLowerCase();
       if (translations[code]) return code;
     }
-    return 'de';
+    return 'en';
   }
 
   function applyDOM(t) {
diff --git a/i18n.min.js b/i18n.min.js
index ee58699..2d6904a 100644
--- a/i18n.min.js
+++ b/i18n.min.js
@@ -1 +1 @@
-var I18n=(function(){"use strict";var d={de:{name:"Deutsch",flag:"DE"},en:{name:"English",flag:"EN"}},i={de:{subtitle:"Monero-Zahlungsanforderung in Sekunden",label_addr:"XMR-Adresse",placeholder_addr:"4...",label_amount:"Betrag",label_desc:"Beschreibung (optional)",placeholder_desc:"z.B. Rechnung #42, Freelance-Arbeit...",label_timer:"Zahlungsfrist (optional)",days:"Tage",placeholder_timer_custom:"Tage",btn_generate:"Zahlungsanforderung erstellen",btn_open_wallet:"In Wallet \xF6ffnen",btn_copy_addr:"Adresse kopieren",btn_download_pdf:"PDF Rechnung",pdf_title:"Zahlungsanforderung",pdf_address:"XMR-Adresse",pdf_amount:"Betrag",pdf_desc:"Beschreibung",pdf_deadline:"Zahlungsfrist",pdf_deadline_days:"{d} Tage",pdf_date:"Datum",pdf_scan_qr:"QR-Code scannen zum Bezahlen",pdf_footer:"Erstellt mit xmrpay.link \u2014 Keine Registrierung, kein KYC",qr_hint:"Klick auf QR zum Speichern",footer:'Open Source &middot; Kein Backend &middot; Kein KYC &middot; <a href="https://gitea.schmidt.eco/schmidt1024/xmrpay.link" target="_blank">Source</a>',aria_currency:"W\xE4hrung",label_uri_details:"Monero-URI anzeigen",label_share_link:"Teilbarer Link",btn_new_request:"Neue Zahlungsanforderung",toast_copied:"Kopiert!",countdown_expired:"Zahlungsfrist abgelaufen",countdown_remaining_days:"Zahlungsfrist: {d} Tage, {h} Std.",countdown_remaining_hours:"Zahlungsfrist: {h}:{m} Std.",rates_offline:"Kurse nicht verf\xFCgbar \u2014 nur XMR-Betrag m\xF6glich",btn_prove_payment:"Zahlung nachweisen",label_tx_hash:"Transaction ID (TX Hash)",placeholder_tx_hash:"64 Hex-Zeichen...",label_tx_key:"Transaction Key (TX Key)",placeholder_tx_key:"64 Hex-Zeichen...",btn_verify_proof:"Zahlung verifizieren",proof_verifying:"Verifiziere...",proof_verified:"Zahlung best\xE4tigt: {amount} XMR",proof_no_match:"Kein passender Output gefunden \u2014 TX Key oder Adresse stimmt nicht",proof_tx_not_found:"Transaktion nicht gefunden",proof_error:"Fehler bei der Verifizierung",status_paid:"Bezahlt"},en:{subtitle:"Monero payment request in seconds",label_addr:"XMR Address",placeholder_addr:"4...",label_amount:"Amount",label_desc:"Description (optional)",placeholder_desc:"e.g. Invoice #42, freelance work...",label_timer:"Payment deadline (optional)",days:"days",placeholder_timer_custom:"Days",btn_generate:"Create payment request",btn_open_wallet:"Open in wallet",btn_copy_addr:"Copy address",btn_download_pdf:"PDF Invoice",pdf_title:"Payment Request",pdf_address:"XMR Address",pdf_amount:"Amount",pdf_desc:"Description",pdf_deadline:"Payment deadline",pdf_deadline_days:"{d} days",pdf_date:"Date",pdf_scan_qr:"Scan QR code to pay",pdf_footer:"Created with xmrpay.link \u2014 No registration, no KYC",qr_hint:"Click QR to save",footer:'Open Source &middot; No Backend &middot; No KYC &middot; <a href="https://gitea.schmidt.eco/schmidt1024/xmrpay.link" target="_blank">Source</a>',aria_currency:"Currency",label_uri_details:"Show Monero URI",label_share_link:"Shareable link",btn_new_request:"New payment request",toast_copied:"Copied!",countdown_expired:"Payment deadline expired",countdown_remaining_days:"Deadline: {d} days, {h} hrs",countdown_remaining_hours:"Deadline: {h}:{m} hrs",rates_offline:"Rates unavailable \u2014 XMR amount only",btn_prove_payment:"Prove payment",label_tx_hash:"Transaction ID (TX Hash)",placeholder_tx_hash:"64 hex characters...",label_tx_key:"Transaction Key (TX Key)",placeholder_tx_key:"64 hex characters...",btn_verify_proof:"Verify payment",proof_verifying:"Verifying...",proof_verified:"Payment confirmed: {amount} XMR",proof_no_match:"No matching output found \u2014 TX key or address mismatch",proof_tx_not_found:"Transaction not found",proof_error:"Verification error",status_paid:"Paid"}},o="de";function u(){var e=null;try{e=localStorage.getItem("xmrpay_lang")}catch{}if(e&&i[e])return e;for(var n=navigator.languages||[navigator.language||"de"],t=0;t<n.length;t++){var a=n[t].substring(0,2).toLowerCase();if(i[a])return a}return"de"}function _(e){document.querySelectorAll("[data-i18n]").forEach(function(n){n.textContent=e[n.getAttribute("data-i18n")]||""}),document.querySelectorAll("[data-i18n-placeholder]").forEach(function(n){n.placeholder=e[n.getAttribute("data-i18n-placeholder")]||""}),document.querySelectorAll("[data-i18n-html]").forEach(function(n){n.innerHTML=e[n.getAttribute("data-i18n-html")]||""}),document.querySelectorAll("[data-i18n-aria]").forEach(function(n){n.setAttribute("aria-label",e[n.getAttribute("data-i18n-aria")]||"")})}function l(e){o=e;var n=i[e];document.documentElement.lang=e;try{localStorage.setItem("xmrpay_lang",e)}catch{}_(n);var t=document.getElementById("langCurrent");t&&(t.textContent=d[e].flag),document.querySelectorAll(".lang-option").forEach(function(r){r.classList.toggle("active",r.getAttribute("data-lang")===e)});for(var a=0;a<c.length;a++)c[a](e)}var c=[];function f(e){c.push(e)}function p(){var e=document.getElementById("langDropdown");if(e){e.innerHTML="";for(var n=Object.keys(d),t=0;t<n.length;t++){var a=n[t],r=document.createElement("button");r.className="lang-option",r.setAttribute("data-lang",a),r.textContent=d[a].name,a===o&&r.classList.add("active"),r.addEventListener("click",(function(y){return function(){l(y),s()}})(a)),e.appendChild(r)}}}function s(){var e=document.getElementById("langPicker");e&&e.classList.remove("open")}function g(){var e=document.getElementById("langPicker"),n=document.getElementById("langToggle");!e||!n||(n.addEventListener("click",function(t){t.stopPropagation(),e.classList.toggle("open")}),document.addEventListener("click",function(t){e.contains(t.target)||s()}))}function h(e){return i[o]&&i[o][e]||e}function m(){return o}return o=u(),document.addEventListener("DOMContentLoaded",function(){p(),g(),l(o)}),{t:h,apply:l,getLang:m,onChange:f}})();
+var I18n=(function(){"use strict";var d={de:{name:"Deutsch",flag:"DE"},en:{name:"English",flag:"EN"}},i={de:{subtitle:"Monero-Zahlungsanforderung in Sekunden",label_addr:"XMR-Adresse",placeholder_addr:"4...",label_amount:"Betrag",label_desc:"Beschreibung (optional)",placeholder_desc:"z.B. Rechnung #42, Freelance-Arbeit...",label_timer:"Zahlungsfrist (optional)",days:"Tage",placeholder_timer_custom:"Tage",btn_generate:"Zahlungsanforderung erstellen",btn_open_wallet:"In Wallet \xF6ffnen",btn_copy_addr:"Adresse kopieren",btn_download_pdf:"PDF Rechnung",pdf_title:"Zahlungsanforderung",pdf_address:"XMR-Adresse",pdf_amount:"Betrag",pdf_desc:"Beschreibung",pdf_deadline:"Zahlungsfrist",pdf_deadline_days:"{d} Tage",pdf_date:"Datum",pdf_scan_qr:"QR-Code scannen zum Bezahlen",pdf_footer:"Erstellt mit xmrpay.link \u2014 Keine Registrierung, kein KYC",qr_hint:"Klick auf QR zum Speichern",footer:'Open Source &middot; Kein Backend &middot; Kein KYC &middot; <a href="https://gitea.schmidt.eco/schmidt1024/xmrpay.link" target="_blank">Source</a>',aria_currency:"W\xE4hrung",label_uri_details:"Monero-URI anzeigen",label_share_link:"Teilbarer Link",btn_new_request:"Neue Zahlungsanforderung",toast_copied:"Kopiert!",countdown_expired:"Zahlungsfrist abgelaufen",countdown_remaining_days:"Zahlungsfrist: {d} Tage, {h} Std.",countdown_remaining_hours:"Zahlungsfrist: {h}:{m} Std.",rates_offline:"Kurse nicht verf\xFCgbar \u2014 nur XMR-Betrag m\xF6glich",btn_prove_payment:"Zahlung nachweisen",label_tx_hash:"Transaction ID (TX Hash)",placeholder_tx_hash:"64 Hex-Zeichen...",label_tx_key:"Transaction Key (TX Key)",placeholder_tx_key:"64 Hex-Zeichen...",btn_verify_proof:"Zahlung verifizieren",proof_verifying:"Verifiziere...",proof_verified:"Zahlung best\xE4tigt: {amount} XMR",proof_no_match:"Kein passender Output gefunden \u2014 TX Key oder Adresse stimmt nicht",proof_tx_not_found:"Transaktion nicht gefunden",proof_error:"Fehler bei der Verifizierung",status_paid:"Bezahlt"},en:{subtitle:"Monero payment request in seconds",label_addr:"XMR Address",placeholder_addr:"4...",label_amount:"Amount",label_desc:"Description (optional)",placeholder_desc:"e.g. Invoice #42, freelance work...",label_timer:"Payment deadline (optional)",days:"days",placeholder_timer_custom:"Days",btn_generate:"Create payment request",btn_open_wallet:"Open in wallet",btn_copy_addr:"Copy address",btn_download_pdf:"PDF Invoice",pdf_title:"Payment Request",pdf_address:"XMR Address",pdf_amount:"Amount",pdf_desc:"Description",pdf_deadline:"Payment deadline",pdf_deadline_days:"{d} days",pdf_date:"Date",pdf_scan_qr:"Scan QR code to pay",pdf_footer:"Created with xmrpay.link \u2014 No registration, no KYC",qr_hint:"Click QR to save",footer:'Open Source &middot; No Backend &middot; No KYC &middot; <a href="https://gitea.schmidt.eco/schmidt1024/xmrpay.link" target="_blank">Source</a>',aria_currency:"Currency",label_uri_details:"Show Monero URI",label_share_link:"Shareable link",btn_new_request:"New payment request",toast_copied:"Copied!",countdown_expired:"Payment deadline expired",countdown_remaining_days:"Deadline: {d} days, {h} hrs",countdown_remaining_hours:"Deadline: {h}:{m} hrs",rates_offline:"Rates unavailable \u2014 XMR amount only",btn_prove_payment:"Prove payment",label_tx_hash:"Transaction ID (TX Hash)",placeholder_tx_hash:"64 hex characters...",label_tx_key:"Transaction Key (TX Key)",placeholder_tx_key:"64 hex characters...",btn_verify_proof:"Verify payment",proof_verifying:"Verifying...",proof_verified:"Payment confirmed: {amount} XMR",proof_no_match:"No matching output found \u2014 TX key or address mismatch",proof_tx_not_found:"Transaction not found",proof_error:"Verification error",status_paid:"Paid"}},o="de";function u(){var e=null;try{e=localStorage.getItem("xmrpay_lang")}catch{}if(e&&i[e])return e;for(var n=navigator.languages||[navigator.language||"de"],t=0;t<n.length;t++){var a=n[t].substring(0,2).toLowerCase();if(i[a])return a}return"en"}function _(e){document.querySelectorAll("[data-i18n]").forEach(function(n){n.textContent=e[n.getAttribute("data-i18n")]||""}),document.querySelectorAll("[data-i18n-placeholder]").forEach(function(n){n.placeholder=e[n.getAttribute("data-i18n-placeholder")]||""}),document.querySelectorAll("[data-i18n-html]").forEach(function(n){n.innerHTML=e[n.getAttribute("data-i18n-html")]||""}),document.querySelectorAll("[data-i18n-aria]").forEach(function(n){n.setAttribute("aria-label",e[n.getAttribute("data-i18n-aria")]||"")})}function l(e){o=e;var n=i[e];document.documentElement.lang=e;try{localStorage.setItem("xmrpay_lang",e)}catch{}_(n);var t=document.getElementById("langCurrent");t&&(t.textContent=d[e].flag),document.querySelectorAll(".lang-option").forEach(function(r){r.classList.toggle("active",r.getAttribute("data-lang")===e)});for(var a=0;a<c.length;a++)c[a](e)}var c=[];function f(e){c.push(e)}function p(){var e=document.getElementById("langDropdown");if(e){e.innerHTML="";for(var n=Object.keys(d),t=0;t<n.length;t++){var a=n[t],r=document.createElement("button");r.className="lang-option",r.setAttribute("data-lang",a),r.textContent=d[a].name,a===o&&r.classList.add("active"),r.addEventListener("click",(function(y){return function(){l(y),s()}})(a)),e.appendChild(r)}}}function s(){var e=document.getElementById("langPicker");e&&e.classList.remove("open")}function g(){var e=document.getElementById("langPicker"),n=document.getElementById("langToggle");!e||!n||(n.addEventListener("click",function(t){t.stopPropagation(),e.classList.toggle("open")}),document.addEventListener("click",function(t){e.contains(t.target)||s()}))}function h(e){return i[o]&&i[o][e]||e}function m(){return o}return o=u(),document.addEventListener("DOMContentLoaded",function(){p(),g(),l(o)}),{t:h,apply:l,getLang:m,onChange:f}})();
diff --git a/index.html b/index.html
index 60255b5..329fe09 100644
--- a/index.html
+++ b/index.html
@@ -1,5 +1,5 @@
 <!DOCTYPE html>
-<html lang="de">
+<html lang="en">
 <head>
   <meta charset="UTF-8">
   <meta name="viewport" content="width=device-width, initial-scale=1.0">
@@ -12,21 +12,21 @@
 
   <header>
     <h1><a href="/" id="homeLink">xmr<span>pay</span>.link</a></h1>
-    <p data-i18n="subtitle"></p>
+    <p data-i18n="subtitle">Monero payment request in seconds</p>
   </header>
 
   <main>
     <div class="card">
       <div class="field">
-        <label for="addr" data-i18n="label_addr"></label>
-        <input type="text" id="addr" data-i18n-placeholder="placeholder_addr" spellcheck="false" autocomplete="off">
+        <label for="addr" data-i18n="label_addr">XMR Address</label>
+        <input type="text" id="addr" data-i18n-placeholder="placeholder_addr" placeholder="4..." spellcheck="false" autocomplete="off">
       </div>
 
       <div class="field">
-        <label for="amount" data-i18n="label_amount"></label>
+        <label for="amount" data-i18n="label_amount">Amount</label>
         <div class="amount-row">
           <input type="number" id="amount" placeholder="0.00" min="0" step="any">
-          <select id="currency" data-i18n-aria="aria_currency">
+          <select id="currency" data-i18n-aria="aria_currency" aria-label="Currency">
             <option value="XMR">XMR</option>
             <option value="EUR" selected>EUR</option>
             <option value="USD">USD</option>
@@ -37,21 +37,21 @@
       </div>
 
       <div class="field">
-        <label for="desc" data-i18n="label_desc"></label>
-        <textarea id="desc" data-i18n-placeholder="placeholder_desc"></textarea>
+        <label for="desc" data-i18n="label_desc">Description (optional)</label>
+        <textarea id="desc" data-i18n-placeholder="placeholder_desc" placeholder="e.g. Invoice #42, freelance work..."></textarea>
       </div>
 
       <div class="field">
-        <label data-i18n="label_timer"></label>
+        <label data-i18n="label_timer">Payment deadline (optional)</label>
         <div class="deadline-badges" id="deadlineBadges">
-          <button type="button" class="badge" data-days="7">7 <span data-i18n="days"></span></button>
-          <button type="button" class="badge" data-days="14">14 <span data-i18n="days"></span></button>
-          <button type="button" class="badge" data-days="30">30 <span data-i18n="days"></span></button>
-          <input type="number" id="timerCustom" data-i18n-placeholder="placeholder_timer_custom" min="1" step="1" class="badge-input">
+          <button type="button" class="badge" data-days="7">7 <span data-i18n="days">days</span></button>
+          <button type="button" class="badge" data-days="14">14 <span data-i18n="days">days</span></button>
+          <button type="button" class="badge" data-days="30">30 <span data-i18n="days">days</span></button>
+          <input type="number" id="timerCustom" data-i18n-placeholder="placeholder_timer_custom" placeholder="Days" min="1" step="1" class="badge-input">
         </div>
       </div>
 
-      <button class="btn btn-primary" id="generate" disabled data-i18n="btn_generate"></button>
+      <button class="btn btn-primary" id="generate" disabled data-i18n="btn_generate">Create payment request</button>
     </div>
 
     <div id="result" class="card">
@@ -61,7 +61,7 @@
       <div class="countdown" id="countdown"></div>
       <div class="uri-box" id="uri" style="display:none"></div>
       <div class="share-link-box" id="shareLinkBox">
-        <label data-i18n="label_share_link"></label>
+        <label data-i18n="label_share_link">Shareable link</label>
         <div class="share-link-row">
           <input type="text" id="shareLink" readonly data-i18n-aria="label_share_link">
           <button class="btn btn-secondary btn-icon" id="copyShareLink" title="Copy">
@@ -70,9 +70,9 @@
         </div>
       </div>
       <div class="actions">
-        <button class="btn btn-secondary" id="openWallet" data-i18n="btn_open_wallet"></button>
-        <button class="btn btn-secondary" id="copyAddr" data-i18n="btn_copy_addr"></button>
-        <button class="btn btn-secondary" id="downloadPdf" data-i18n="btn_download_pdf"></button>
+        <button class="btn btn-secondary" id="openWallet" data-i18n="btn_open_wallet">Open in wallet</button>
+        <button class="btn btn-secondary" id="copyAddr" data-i18n="btn_copy_addr">Copy address</button>
+        <button class="btn btn-secondary" id="downloadPdf" data-i18n="btn_download_pdf">PDF Invoice</button>
       </div>
       <!-- TX Proof Verification -->
       <div class="proof-section" id="proofSection">
@@ -81,27 +81,27 @@
             <path d="M22 11.08V12a10 10 0 1 1-5.93-9.14"/>
             <polyline points="22 4 12 14.01 9 11.01"/>
           </svg>
-          <span data-i18n="btn_prove_payment"></span>
+          <span data-i18n="btn_prove_payment">Prove payment</span>
         </button>
         <div class="proof-panel" id="proofPanel">
           <div class="field">
-            <label for="txHash" data-i18n="label_tx_hash"></label>
-            <input type="text" id="txHash" data-i18n-placeholder="placeholder_tx_hash" spellcheck="false" autocomplete="off">
+            <label for="txHash" data-i18n="label_tx_hash">Transaction ID (TX Hash)</label>
+            <input type="text" id="txHash" data-i18n-placeholder="placeholder_tx_hash" placeholder="64 hex characters..." spellcheck="false" autocomplete="off">
           </div>
           <div class="field">
-            <label for="txKey" data-i18n="label_tx_key"></label>
-            <input type="text" id="txKey" data-i18n-placeholder="placeholder_tx_key" spellcheck="false" autocomplete="off">
+            <label for="txKey" data-i18n="label_tx_key">Transaction Key (TX Key)</label>
+            <input type="text" id="txKey" data-i18n-placeholder="placeholder_tx_key" placeholder="64 hex characters..." spellcheck="false" autocomplete="off">
           </div>
-          <button class="btn btn-primary" id="verifyProof" disabled data-i18n="btn_verify_proof"></button>
+          <button class="btn btn-primary" id="verifyProof" disabled data-i18n="btn_verify_proof">Verify payment</button>
           <div class="proof-result" id="proofResult"></div>
         </div>
       </div>
-      <button class="btn btn-primary btn-new" id="newRequest" data-i18n="btn_new_request"></button>
+      <button class="btn btn-primary btn-new" id="newRequest" data-i18n="btn_new_request">New payment request</button>
     </div>
   </main>
 
   <footer>
-    <p data-i18n-html="footer"></p>
+    <p data-i18n-html="footer">Open Source &middot; No Backend &middot; No KYC &middot; <a href="https://gitea.schmidt.eco/schmidt1024/xmrpay.link" target="_blank">Source</a></p>
   </footer>
 
   <div class="lang-picker" id="langPicker">
diff --git a/style.css b/style.css
index a736104..3632fea 100644
--- a/style.css
+++ b/style.css
@@ -320,8 +320,8 @@ textarea {
 }
 
 .btn-primary:disabled {
-  background: #5a3520;
-  color: #bbb;
+  background: #3a2215;
+  color: #a0a0a0;
   cursor: not-allowed;
 }