I created a new team for a validation with my private email address. That worked out pretty well. After problems with my company account I have deleted all entries in the Android App Microsoft Authenticator. If I add my private account to the Authenticator by password, I will also be displayed privately. I have an 8 digit code. My business accounts have a 6-digit code. If I want to log in to my self-created Teams, the user is checked first. I can confirm this successfully with the Authenticator.On the next page I choose the tenant. And teams send me a request for the Authenticator. On my mobile phone I get the message: "Notifications from your business, school or university account cannot be processed ...". If I want to login with code I can only enter 6 digits of my 8 digit code. I can't find a QR Code that I can scan with the Authenticator. Deactivating the Authenticator in my private account will not change anything for teams.
I use teams on Ubuntu, Windows and have tried the web client.
Since it was only a test, deleting the team installation would be a possibility. Deleting my private account is not necessary.
Translated with DeepL