diff --git a/src/lib/utils/unique-identifier.js b/src/lib/utils/unique-identifier.js
index 0cfa141..7b5b4a8 100644
--- a/src/lib/utils/unique-identifier.js
+++ b/src/lib/utils/unique-identifier.js
@@ -138,8 +138,8 @@ export function extractIdentifierFromUrl(url) {
         return null;
     }
     
-    // Match pattern /id/QCXXXXXXXX
-    const match = url.match(/\/id\/([A-Z0-9]{10})$/i);
+    // Match pattern /id/qryptchatXXXXXXXX (qryptchat prefix + 8 alphanumeric chars)
+    const match = url.match(/\/id\/(qryptchat[A-Z0-9]{8})$/i);
     if (!match) {
         return null;
     }
diff --git a/src/lib/utils/url-link-converter.js b/src/lib/utils/url-link-converter.js
index cff1cc1..2ac9ca7 100644
--- a/src/lib/utils/url-link-converter.js
+++ b/src/lib/utils/url-link-converter.js
@@ -42,7 +42,7 @@ export function convertUrlsToLinks(text) {
 
 	// Extract code blocks and replace with placeholders
 	while ((codeMatch = codeBlockRegex.exec(text)) !== null) {
-		const placeholder = `__CODE_BLOCK_${codeIndex}__`;
+		const placeholder = `<[CODE_BLOCK_${codeIndex}]>`;
 		const codeContent = codeMatch[1];
 		codeBlocks.push(`<pre><code>${escapeHtml(codeContent)}</code></pre>`);
 		textWithPlaceholders = textWithPlaceholders.replace(codeMatch[0], placeholder);
@@ -87,7 +87,7 @@ export function convertUrlsToLinks(text) {
 
 	// Restore code blocks from placeholders
 	codeBlocks.forEach((codeBlock, index) => {
-		const placeholder = `__CODE_BLOCK_${index}__`;
+		const placeholder = `<[CODE_BLOCK_${index}]>`;
 		result = result.replace(placeholder, codeBlock);
 	});