Hi,
Please do this:
Press Windows+R keys on the keyboard, or Right-click Start on the Taskbar and choose Run.
Type/Paste: %localappdata%\Packages\Clipchamp.Clipchamp_yxz26nhyzhsrt\
Press Enter.
Clear the contents of:
AC
LocalState
LocalCache
Folders.
Sign in again and let me know.
I hope you find this information useful. If you have any more questions, don't hesitate to reach out. Otherwise, please take a moment to accept the answer. Wishing you good luck!