I sign in through facebook.
Occasionally I will have to log back in when I open the app, which isnt too annoying. However, twice now, I've been forcefully signed out while reading.
First, screen goes black...then white...then Im forced to close the app. When opening it afterwards, it acts like its a fresh install and I'm a new user, so it shows 6 recommended novels in my library until I sign back in.
The problem is that after signing in, the novels that were "recommended" have lost my reading progress with no syncronize option. So Ive had to scroll back through to find my place in Release That Witch & Kings Avatar.
Any way to resolve this? Anybody else with similar issues? Ive used two different android phones and experienced the same problem.