With every new system there are always growing pains.
Adobe is no longer updating PGB and Apple is no longer accepting apps not built with their latest SDK. As developers, we really have no choice but to migrate to something else. Thankfully, George and crew is developing a replacement as there aren’t many alternatives.
As for the camera stuff. Right before they updated Voltbuilder to the latest Android sdk, I built one of my apps with both the camera plugin and the media plugin. Both worked and prompted for access. If you’re just doing subsequent builds and tests it won’t prompt you again unless you completely delete the app and reinstall OR you go to settings and revoke access and then it depends on the device and os version as to whether it will prompt you or just ignore your request. The camera plugin has a call to check permissions, does it not?
Also when I built, I built with the latest versions of the plugins. Have you made sure you have the latest versions or are you perhaps using an older version? Have you tried deleting the app and reinstalling to see what happens? Have you rebooted your device? Obviously there’s lots of things we can try.