I also experienced the same thing, losing my previous logs and ratings on AL caches, after updating to app version 1.3.9 to my iPhone 6 (iOS 12.5.5). On version 1.3.8 it was working completely fine. At the moment I'm not even able to get access to the AL app. I am tried reinstalling the app several times without any improvement.
Yes, let's hope this bug can be fixed soon! Clearly this is problem several people are experiencing.