Feb 19 2020 09:29 AM
Feb 19 2020 01:56 PM
Do you sign in with the same account? Can you try from a computer and web browser to sign in at https://teams.microsoft.com/?
Feb 19 2020 08:33 PM
Feb 19 2020 11:48 PM
This sounds like your email address is linked to both a Microsoft account and an Office 365 account and you are choosing the wrong option of Personal or Work Account?
If not and you just have a Microsoft account try signing into Outlook.com with your Microsoft account, if you get in then your account is ok.