Xfinity Visual Voicemail No Longer Available

I'm using a carrier locked Galaxy S22 on Xfinity Mobile. I've been with this service for several phone generations and have always had access to visual voicemail though the Xfinity app, as recently as earlier this week. Today I opened the app and got an error screen saying it is no longer compatible with this device and I should use the pre-installed voicemail on my device. The only voicemail app Samsung includes does not include visual voicemail. What am I missing here? How do I restore VVM?