Jumping back a few episodes



So a while ago I started reading the first season of Pretty Little Liars and I read 11 out of the 12 chapters. Then I just forgot to finnish until today. But now, when I started reading the story again, I noticed that I was reading the ninth chapter again. I had to read episode 9 to 11 all over again, which I had to pay for with passes again, and the gem option I chose the first time was gone. Have you experienced this? Do you know if I can fix it?