Doesn’t seem to work? – AT&T Voicemail Viewer (Home) Review

Seems pretty straightforward so I can’t figure out what I’m doing wrong. I entered the phone number and the password and it says authentication failed and asks me to send error report. I tried several times and checked my numbers. I think I sent three error reports. Idk looks like I have to just do it the old fashioned way and call and listen.
Review by PLM-DE on AT&T Voicemail Viewer (Home).