Reason: this may be due to the inconsistency between the local database and the server database after the update.
Solution: delete or rename the local Teampel .db database file, and sign in again.
1. Find the local folder - through the personal settings of Teampel, select "Local data" and open "Personal folder".
2. Quit Teampel
3. Delete the .db file under your personal teampel folder (location: C:\Users\Admin\AppData\Roaming\zeon\teampel\[1048xxx_*****]. This won't affect any personal settings and records):
4. Restart Teampel and login to your account. Click “Sync history” to synchronize all your historical data.