Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Dear Béla Bisazki,
Good day! Thank you for posting to Microsoft Community.
According to your description, the issue of your concern looks like you have issues with the Microsoft Authenticator app. My apologies for the inconvenience that this is causing you.
I would very much want to assist you further but as public forum support, we have limited tools to troubleshoot this given issue, it is best for you to contact the dedicated Authenticator app support team by posting in -Microsoft Authenticator - Microsoft Q&A. Engineers who are dedicated into this environment with rich experience and more resources can then assist efficiently.
We believe they would conduct in-depth research on the problem you encountered and provide you with more professional assistance.
Thanks for your precious time and your understanding would be highly appreciated.
Best Regards,
Ashraf