I have had the same problem. The apple ids I have used include com.appname, com.domain.appname, com.domain.appname.XXX. None of these bundle identifiers have worked. This is the error message I receive each time:
ERROR ITMS-90347: "Bad bundle identifier. The bundle identifier 'com.Signal' of the application extension Signal.app/PlugIns/Signal.appex should start with the application's bundle identifier 'com.Signal' and not contain more than one period “.” after the application's bundle ID." ERROR ITMS-90347: "Bad bundle identifier. The bundle identifier 'com.Signal' of the application extension Signal.app/PlugIns/Signal.appex should start with the application's bundle identifier 'com.Signal' and not contain more than one period “.” after the application's bundle ID."
The domain is always drewbennett
appname: Signal
I have looked at all of these sites:
https://forums.developer.apple.com/thread/15712
ERROR ITMS-90347: Bad bundle identifier
https://forums.adobe.com/thread/1369892
This is what I have struggled with for weeks. Please help if anyone has any answers.
Best, Drew