I'm having an issue with live view as well, not sure if it's the new update, or upgrading to Android 11. But live view no longer works. The moment i open it up, it loads the screen for a second but closes immediately and brings me back to the Ring App's main menu.
Ok, I've tried this using the 3.30.0 Ring app on my Pixel 3a and 4a running Android 11 using my Ring Pro doorbell. I don't have the same issue. It works fine for me. I do see a problem with my outdoor stickup cam latest version on the dashboard. It shows it as offline but in the device section it works fine. Other than that I don't see anything else wrong so far. It may be another app that is conflicting with the Ring app. You could also try removing that version and downloading the last version from apkmirror.com.