The game is almost not workable, so it is better to avoid all. Ranked pvp rarely works, that is, the game currency is difficult to get even with a good deck. Well, stupid builds from 2-3 duplicate cards in them. This even Shadowerse don't remember. About what daily quests are counted incorrectly(buy 5 boosters for example), and probably know very well.
This game is developed by mentally ill people.