Crashing and Impossible to Unfavorite

Easy to figure out, and good database. I bought the full version so I could store everything I wanted to read. But a few concerns:
1. There are some manga that say there are __ number of chapters, but when I opened the window there were no chapters to read.
2. After I add a manga to favorites, it refuses to be permanently unfavorited. I could delete it but it would come back after the app fully closes and reopens. This needs to be fixed.
3. Constantly crashes!!! Please fix

J_Star** about Manga Meow, v4.2