I tried reinstalling the whole UAD package (clean reinstall), reauthorizing all plugins through the control panel and rescanning all plugins in Logic (after manually deleting the AU cache), but when trying to use AutoTune Advanced as an insert effect it just says 'Disabled' in red letters at the bottom.

The plugin works just fine when running it as an insert in Console. I'm encountering this issue where after installing UAD V10.0 the AutoTune Realtime Advanced Plugin (the one that is supposed to be M1 native now, not the one with the white and blue interface) stopped working in Logic when running the DAW in the regular native mode (I'm using an M1 Mac with Monterey 12.3.1).