If your call tracking was working and suddenly stops working, there can be many reasons for this. This article lists reasons for a sudden malfunction if your call tracking suddenly stops working. If you have problems and questions about the setup, you can find help here: Enable call tracking
Is the Satellite running?
The most common problem is that the Satellite has not started properly. This can be due to a system update. Often this problem can be solved by restarting your computer. You can find instructions here: Install Satellite
Is the computer in the same network as the Fritzbox?
Check whether your computer is in the same network as the Fritzbox. Otherwise, call tracking cannot work. Using a guest WLAN is also a reason why call tracking does not work.
Fritzbox update?
If your Fritzbox has been updated, call tracking may need to be enabled again. You can find information about this here: Enable call tracking
Check call tracking settings
Check and possibly deactivate all special settings and reset filters. If your phone number has changed or something else, a filter function may be preventing call tracking from working.
Disable antivirus scanner
Check and disable your manually installed antivirus scanner via McAfee or similar and then restart your computer.
Do you have multiple computers with Satellite installed at your location?
The Satellite with call tracking enabled must only be active on one computer. If you experience problems with call tracking suddenly not working or only working "temporarily", you should try shutting down the other computers or disabling the Satellite on them.
Is a WLAN repeater being used?
WLAN repeaters are sometimes used to boost a weak signal. However, this can cause difficulties when installing call tracking. If you enter the following IP address in the address bar of your Chrome browser, you should go directly to the admin page of your Fritz!box: 169.254.1.1.