I have a Pixel XL (1) running Android Oreo, and recently upgraded to Visual Voicemail. The message screen in the phone app shows an error that says Visual Voicemail is not activated, and prompts me to call the regular voicemail to retrieve audio-only messages. If I go to Settings (in the phone app) and select voicemail, an error message reads "Visual voicemail is not activated yet, please try again later."
It has been this way for at least 1-2 months. All attempts by Verizon tech support have failed; they prompted me to restart, soft reset, disable and re-enable the phone app, and they also did something on their end to reset my voicemail account at least twice. Nothing is working. So far I have NOT done a full factory reset, for obvious reasons. I'm hoping I can avoid that; Verizon has not prompted me to do that, anyway.
Obviously I am paying for a monthly service that doesn't work, so I need to get this fixed.