A Microsoft app for iOS and Android devices that enables authentication with two-factor verification, phone sign-in, and code generation
Found solution that worked in Feb 19 2024 12:12am post by Sheila Semavor, and correctly answered by Deepak Dhiman on Apr 28 2024 2:36am. Deepak's full answer is there, but in brief, the inactive account needs to be deleted from Manage Accounts which is found within Android settings. Once deleted from there, it disappears from the Authenticator app.