I happened to do the process today today to generate the p.12 and the provision file. I just do app development and never publish to the app store ourselves. I don't always follow the apple development news but I saw today that they changed the way certs work yesterday right before renewing my stuff for the year, linked here
So we've done a whole bunch of troubleshooting and the closest we came to getting it to work was a published IPA but it would not launch on the phone giving the error "integrity could not be verified". We published with animate 2020 and the latest version of air 18.104.22.1685.
We can however publish an app with our cert through xcode and even with the .p12 through unreal. So I think it's just air issue?
Anyone have any issues with this yet or any insight as to what is happening?
Thanks for you time!