Additional sign-in or account-related issues within Microsoft Teams Free
I'll look further into this. It sounds unusual unless there has been some change to your Microsoft account recently or due to cache login on the system.
Could you please click on the profile pic and share with me the screenshot?
Also, click on profile pic > Manage account and share another screenshot.
Please blur or mask any sensitive/personal information before sharing the screenshot on the community forum.
Regards
Nik