Most connection issues come down to your Bitrix24 URL, server address, or router port forwarding — the Setup Guide covers all three. If you're still stuck, reach out directly.
Make sure you've installed the Lulu app from the Bitrix24 marketplace on the exact portal URL you're entering — a typo in the URL (missing .bitrix24.com, wrong subdomain) is the most common cause.
Confirm port 8090 is forwarded to your FreePBX server on your router, and that no firewall rule on the server itself is blocking it.
Usually means you're either over the 5-extension free limit, or a paid license has expired — the module tells you which. Check the License & Connectivity panel on the Connection tab.
Click Download Logs on the Error Log panel inside the module — it bundles everything needed to diagnose the issue into one file you can send us or paste into a support chat.