Running fine on macOS 11 beta 3, then updated to 7 (had to reinstall the profile from the developer website); now it will not even boot. LED turns on for a few secs, then distinguishes, then again lights for a few seconds, etc. Doesn't even get to the Apple logo.

I have had a password autofill app extension in production for years. It still works fine. Except when the user taps a username or password textfield and selects "AutoFill" from the context menu. They are shown a modal error dialog, stating: "AutoFill Unavailable - The developer needs to update it to work with this feature." I cannot find any help on this issue. The AutoFill extension works fine when tapping the "Passwords" bar above the iOS keyboard. Any pointers would be appreciated.