New Bug Encountered: App load error, iOS15.2

[JensenDK]

Message:

This app could not be loaded. please ensure you have internet connecectivity

When opening App with device offline.
Error when using:
iOS 15.2 on iPhone 6s
iOS 15.2 on iPhone 7

No problem when using:
iOS 12.5.5 on iPhone 5s
iOS 14.8.1 on iPhone 8
Old Android smart phone

When updating from 14.8.1 to 15.2 on iPhone 8 the problem occurs.

Have tried everything, reinstalling etc.