Changing between multiple Teams accounts within the app or browser
Hello,
Since the account details is not available in your Windows credentials and you cannot see it when you check your profile from Teams app then you are no longer signed into the account.
However, to troubleshoot further, if you are on the classic Teams, please follow the steps below to clear Teams cache:
If Teams is still running, right-click the Teams icon on the taskbar, and then select Quit. Open the Run dialog box by pressing the Windows logo key +R. In the Run dialog box, enter the following path, and then select OK: %appdata%\Microsoft\Teams Delete all files and folders in the directory. Restart Teams.
Kindly refer to this article for more details: https://learn.microsoft.com/en-us/microsoftteams/troubleshoot/teams-administration/clear-teams-cache
Best regards,