AT&T Visual Voicemail not working
I have a Samsung Galaxy S20 Ultra 5G I purchased from AT&T. The Visual Voicemail was working when I got it. It is a AT&T locked device with the AT&T symbol on startup. I tried customer service and they told me to download AT&T Visual Voicemail app. This only results in an error message say "this app device is not compatible ". Customer service said they think they fixed it on AT&T side, but no success. This seems very strange because I have had Visual Voicemail for years. Can someone please help?