Microsoft Authenticator receives repeated unexpected sign-in requests from different countries.

I have received multiple unexpected Microsoft Authenticator number-matching requests over the last few weeks. The requests came from different countries (Mexico, France, and Spain), and I denied all of them. I changed my password after the first incident. My password is unique and stored in Bitwarden. I have Microsoft Authenticator enabled, and I do not use passwordless sign-in. The strange part is that these authentication requests do not appear in my Recent Activity page. Is there anything I can do to stop these requests? I came here because a support representative told me to. I appreciate all your help beforehand.