diff --git a/source/packages/mod_mokosuiteclient_cache/src/Dispatcher/Dispatcher.php b/source/packages/mod_mokosuiteclient_cache/src/Dispatcher/Dispatcher.php
index 7020eccf..75e2f7bb 100644
--- a/source/packages/mod_mokosuiteclient_cache/src/Dispatcher/Dispatcher.php
+++ b/source/packages/mod_mokosuiteclient_cache/src/Dispatcher/Dispatcher.php
@@ -4,11 +4,15 @@ namespace Moko\Module\MokoSuiteClientCache\Administrator\Dispatcher;
 defined('_JEXEC') or die;
 
 use Joomla\CMS\Dispatcher\AbstractModuleDispatcher;
+use Joomla\CMS\Uri\Uri;
 
 class Dispatcher extends AbstractModuleDispatcher
 {
 	protected function getLayoutData()
 	{
-		return parent::getLayoutData();
+		$data = parent::getLayoutData();
+		$data['domain'] = parse_url(Uri::root(), PHP_URL_HOST) ?: '';
+
+		return $data;
 	}
 }
diff --git a/source/packages/mod_mokosuiteclient_cache/tmpl/default.php b/source/packages/mod_mokosuiteclient_cache/tmpl/default.php
index 5bbb3c43..4ea7e30d 100644
--- a/source/packages/mod_mokosuiteclient_cache/tmpl/default.php
+++ b/source/packages/mod_mokosuiteclient_cache/tmpl/default.php
@@ -13,6 +13,7 @@ use Joomla\CMS\Session\Session;
 $token    = Session::getFormToken();
 $cacheUrl = 'index.php?option=com_mokosuiteclient&task=clearCache&format=json';
 $tempUrl  = 'index.php?option=com_mokosuiteclient&task=clearTemp&format=json';
+$domain   = $domain ?? '';
 ?>
 
 <style>
@@ -21,9 +22,15 @@ $tempUrl  = 'index.php?option=com_mokosuiteclient&task=clearTemp&format=json';
 .mokosuiteclient-cleaner-btn { cursor:pointer; padding:0.2rem 0.5rem; font-size:0.8rem; border-radius:3px; text-decoration:none; color:var(--template-text-dark,#495057); transition:background 0.15s; white-space:nowrap; }
 .mokosuiteclient-cleaner-btn:hover { background:rgba(0,0,0,0.08); color:var(--template-text-dark,#212529); text-decoration:none; }
 .mokosuiteclient-cleaner-sep { color:var(--template-text-dark,#adb5bd); padding:0 0.1rem; font-size:0.8rem; }
+.mokosuiteclient-domain { font-family:monospace; font-size:0.75rem; color:var(--template-text-dark,#6c757d); cursor:pointer; padding:0.15rem 0.4rem; border-radius:3px; transition:background 0.15s; }
+.mokosuiteclient-domain:hover { background:rgba(0,0,0,0.06); }
 </style>
 
 <div class="header-item-content mokosuiteclient-cleaner">
+	<?php if ($domain): ?>
+	<span class="mokosuiteclient-domain" id="mokosuiteclient-domain" title="Support key — click to copy"><?php echo htmlspecialchars($domain); ?></span>
+	<span class="mokosuiteclient-cleaner-sep">|</span>
+	<?php endif; ?>
 	<span class="mokosuiteclient-cleaner-label">Clear:</span>
 	<a href="#" class="mokosuiteclient-cleaner-btn" id="mokosuiteclient-clear-cache" title="Clear all Joomla cache">
 		<span class="icon-bolt" aria-hidden="true" id="mokosuiteclient-cache-icon"></span> Cache
@@ -85,5 +92,17 @@ document.addEventListener('DOMContentLoaded', function() {
 
 	setupCleaner('mokosuiteclient-clear-cache', 'mokosuiteclient-cache-icon', '<?php echo $cacheUrl; ?>', '<?php echo $token; ?>');
 	setupCleaner('mokosuiteclient-clear-temp', 'mokosuiteclient-temp-icon', '<?php echo $tempUrl; ?>', '<?php echo $token; ?>');
+
+	// Click-to-copy domain
+	var domainEl = document.getElementById('mokosuiteclient-domain');
+	if (domainEl) {
+		domainEl.addEventListener('click', function() {
+			navigator.clipboard.writeText(domainEl.textContent.trim()).then(function() {
+				var orig = domainEl.textContent;
+				domainEl.textContent = 'Copied!';
+				setTimeout(function() { domainEl.textContent = orig; }, 1500);
+			});
+		});
+	}
 });
 </script>