Hello Toni,
Thank you for reaching out to this forum. As a fellow Microsoft user, I'm here and ready to help you out today.
I understand that you're facing issue while accessing your personal account as there are no pop up received to enter the 2 digit code generated in authenticator app.
If this is your personal account, could you please try to change the security option from Authenticator app to your phone number or email?
Try to use any alternate verification method like email. If you able to use email option, please try to disable MFA temporarily by accessing your account.
You will have option like "other ways to sign" or "I don't have access to my Microsoft Authenticator App"

To disable authenticator app as an option,
- Go to the Security basics page and sign in with your Microsoft account.
https://account.microsoft.com/security
- Select More security options.
- Under Two-step verification, choose Set up two-step verification to turn it on, or choose Turn off two-step verification to turn it off.
- Follow the instructions.
For additional information please refer below link.
https://support.microsoft.com/account-billing/bf2505ca-cae5-c5b4-77d1-69d3343a5452
Hope this information would be useful to you. Please feel free to get back if you need any additional info.
Thank you!
Ravikumar
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