Viva Engage connection with MFA

I'm not able to connect to https://engage.cloud.microsoft/main/org/microsoft.com, where I'm was added as member of several communities (I received notifications with "You have been added on...").

I'm requested to log on using my work account. All options fail:

• Using passkey: "Something went wrong"
• Using Authenticator app: "Request wasn't sent" (I approved the request.)
• Using password: "Your account or password is incorrect." (I entered the correct password.)

It could be something with connection between my company and Microsoft. My organization has passwordless logon.

Is this something that Microsoft or my organization has to fix?