I paid to purchase additional points so I could unlock chapters/books and I never got the points added to my account. So I sent a message as requested through the "submit a request" link on their page which says they're only available 9:00 a.m. to 6:00 p.m. Central European Time. It appears now I have to wait 2 days to try to get my points credited to my account because their app is not working appropriately. Very disappointing and at this point I do not recommend.