I don't think I've had one single experience where this app worked correctly on the first try. I've had endless loops where I had to use authenticator to log into authenticator, I've had pop-ups block the numbers you need to tap, and most recently I've had a screen come up where I have to agree to the privacy policy to use the app, but the "I agree" button does not work. I've been tapping it periodically for about 5 minutes; literally nothing happens. Utterly ill-concieved, even for Microsoft!