Help with MFA Microsoft Authenticator account app - Error when searching for an account although the account is logged in

Question

I have set up my account with Microsoft Authaticator App. I then deleted my account and installed the account again. If I now go to https://myaccount.microsoft.com/ in the browser and want to call up my security information there, the security code that I have to enter on my mobile phone in the Microsoft Authenticator app is displayed. However, I get an error message on my mobile phone: "Error searching for an account to complete multi-factor authentication"