"Upgrade" is a serious downgrade. The Feb 2022 upgrade destroyed this app, I have been using Comixology for years without any issues. Now the navigation is almost unusable. I have found I need to load the book I've downloaded 5 minutes before I can read it, why does it take so long to pick up where you left off??? Amazon, please look at these reviews and reconsider your "improvements". I will gladly change my review if this would work nearly as well as it used to.