Time to say good-bye. Moving to another app. There has always been stability issues with aCar and multi-driver sharing of data was poor. Support response has been fairly dismal. Last straw was loosing my pro features just because I upgraded my phone.
I moved to Simply Auto. They explain their file structures, and have a conversion tool. Questions to support get answered and my pro license features didn't disappear due to new phone. Multi-driver updates to same vehicle works flawlessly. I like the interface.