diff --git a/index.php b/index.php
index 27dc946..7ba03be 100644
--- a/index.php
+++ b/index.php
@@ -20,7 +20,7 @@ $api_cg = json_decode(file_get_contents('coingecko.json'), true);
 // Configuration file
 $config = [];
 if (file_exists('config.php')) {
-    $config = require 'config.php';
+    $config = require_once 'config.php';
 }
 
 $display_servers_guru = isset($config['servers_guru']) && $config['servers_guru'] === true;
@@ -106,5 +106,5 @@ foreach (array_reverse($preferred_currencies) as $currency) {
 }
 
 // Output the HTML
-require 'templates/index.php';
+require_once 'templates/index.php';
 ?>
diff --git a/src/css/custom.css b/src/css/custom.css
index 702ad95..6fda3a8 100644
--- a/src/css/custom.css
+++ b/src/css/custom.css
@@ -122,6 +122,18 @@ p {
     .btn {
         min-width: 38px;
     }
+
+    #donation-qr {
+        width: auto;
+        height: 80vh;
+        max-width: 600px;
+        max-height: 600px;
+    }
+
+    #donation-qr-container {
+        height: auto;
+        padding: 20px;
+    }
 }
 
 .bs-tooltip-auto {
@@ -136,4 +148,20 @@ p {
     top: -1px;
     border-width: 0.4rem 0.4rem 0;
     border-top-color: #000;
+}
+
+#donation-qr-container {
+    display: none;
+    justify-content: center;
+    align-items: center;
+    height: 100vh;
+}
+
+#donation-qr {
+    width: 100%;
+    height: auto;
+}
+
+#donation-qr-toggle:checked ~ #donation-qr-container {
+    display: flex;
 }
\ No newline at end of file
diff --git a/src/js/main.js b/src/js/main.js
index 9f99bd2..67758ad 100644
--- a/src/js/main.js
+++ b/src/js/main.js
@@ -3,6 +3,14 @@ import '../css/custom.css';
 
 import Tooltip from 'bootstrap/js/dist/tooltip';
 
+/////
+let inactivityTimeout = 30; // in seconds
+let fetchInterval = 30; // in seconds
+/////
+
+inactivityTimeout = inactivityTimeout * 1000;
+fetchInterval = fetchInterval * 1000;
+
 const tooltipTriggerList = Array.from(document.querySelectorAll('[data-toggle="tooltip"]'));
 const tooltipList = tooltipTriggerList.map(tooltipTriggerEl => new Tooltip(tooltipTriggerEl, { placement: 'top' }));
 console.log(tooltipList);
@@ -14,13 +22,12 @@ const runConvert = () =>
     lastModifiedField === 'xmr' ? xmrConvert() : fiatConvert();
 
 let updateInterval
-const startFetching = () => updateInterval = setInterval(fetchUpdatedExchangeRates, 5000);
+const startFetching = () => updateInterval = setInterval(fetchUpdatedExchangeRates, fetchInterval);
 const stopFetching = () => {
     clearInterval(updateInterval)
     updateInterval = null;
 };
 
-const inactivityTimeout = 30 * 1000; // 30 seconds
 let lastActivity = Date.now()
 
 const resetActivity = () => lastActivity = Date.now()
diff --git a/templates/index.php b/templates/index.php
index c7c8575..1e4cd0b 100644
--- a/templates/index.php
+++ b/templates/index.php
@@ -121,7 +121,7 @@
                     <?php echo $info;
                     if ($display_servers_guru) {
                         echo $servers_guru;
-                    };
+                    }
                     echo $attribution; ?>
                 </small>
                 <hr />