Hi @UtauyoNASE
1) Try going to the systray > Microsoft Teams > Sign Out
Then try restarting your device and see if the screen is going.
2) You can try clearing Teams cache:
https://learn.microsoft.com/en-us/microsoftteams/troubleshoot/teams-administration/clear-teams-cache
3) Re-install Microsoft Teams if the problem persists.
If this is helpful please accept answer.