Not authorized?!? – Frontier Voicemail Viewer Review

Got the "You are not authorized to use this application" error message - what?!? I was using it for two years with my iPhone 5S but now that I've upgraded to the 6S+ I'm not authorized??? I've been on the phone bounced between customer support & tech support for three days trying to resolve this and my head is ready to explode. I'm done. This app is useless if I can't log in.
Review by beinuppity on Frontier Voicemail Viewer.