Hello Cai11
Thanks for visiting Microsoft Community.
The issues on MFA is out of reach of the response support community. It is more suitable for publishing on Microsoft Learn (English only),
you can click on "Ask a question", there are experts who can provide more professional solutions in that place. Here is a link to the forum where you can raise specific scenarios and share your idea to help solve the problem. Microsoft Authenticator - Microsoft Q&A
I won't be able to help you, but I'll leave that question open in case one of our amazing volunteers has ideas for you.
Best Regards,
Tommy-MSFT | Microsoft Community Support Specialist
