Earning gems becomes harder and harder. I noticed that there is no possibility to earn gems as second reward for watching ads anymore. Also there is no daily gems for 50xp points. The only things left as a reward is point booster, which is useless in reality, and opening chests every hour and I think you have to be really lonely to have time for that. Of course I can win in leagues, but to be honest I'm no competition for premium users. Learning with this app, isn't fun and easy anymore.