I've been using Ms teams quite long already but my problem is that it keeps asking me to sign in and sign in, so when I tried to sign in this app is asking me for my authenticator but the problem is I dont have a authenticator but when tried to put my account in my downloaded authenticator it keeps asking me to approve request in Microsoft authenticator but the problem is that "I DONT HAVE AUTHENTICATOR APP" That's why I downloaded the authenticator app to approved my sign in request.