It takes 180 ivouchers to unlock 1 chapter. You used to earn 72 ivouchers for watching ads. Now you only get 12. If you aren't lucky enough to choose a card with 60 ivouchers when you login, then you are stuck waiting to read even 1 chapter. I unfortunately picked a card with only 6 ivouchers 2 days in a row so it took me 3 days before I could read 1 chapter. Either lower your chapter costs or increase earnings. If I can't even read 1 chapter per day, then I'm deleting this app.