Bookling - Track Your Reading Habits App Reviews

I legit lost all my books, and I am quite upset. This tracks books amazingly, but I lost all my data.

No place to put an author. No way to edit a book after you are finished. Should be able to put a url in for a book cover. No idea what achievements I can work toward. Doesnt record total pages read. Cant rate a book. What exactly did I pay for?