I migrated from Windows 10 to Windows 11 yesterday and after the upgrade I noticed that I lost all my contacts and server groups in TS3. Is there a possibility to recover them?
if you have not synchronized your servers and contacts, it is not possible to restore them. TeamSpeak can not do this because only you have access to this data.
Contained all in these post:
I lost all my data (solved) - General Discussion / Account - TeamSpeak