Sometimes when there is an iOS update on the device, there could be bugs that could affect the performance on SelBuk. The feedback from the user give us the way to check and fix the bugs.
However, we always suggest to avoid updating when there is a new iOS. Do not have auto updating on either iOS or SelBuk. There could be changes that would create some issues. So when there is one it is important to sync SelBuk and then check on the web version that all your data has been synced then delete and reinstall SelBuk green icon from the AppStore so that it would adjust any issue that might happen. Nonetheless, let us know about it so that the development department will work on the issue. We hope to find the solution and fix it for the next update.