1. upgrading from Una 9 to Una 10
2. one app has versions for example 9.3, 9.4, 9.5, 10.0
If before upgrading the app was 9.4 and now we are on Una 10.0 there is no chance to update the app anymore. Only 9.5 to 10.0 will be successful.
I think the only way for the app is now to delete it and install it completely new.
In worst case all manual settings of the app are lost.
Or have someone an idea to solve this problem without reinstalling the app?