well don't stake level. it's bad you lose a lot .. here when you go up to level 105 you won't be able to win xp .. now if you want to go up fast i recommend you save at least 3600 coupons per month for the grate plates event .. since you're spending 3600 .. they give you vial keys .. refine very good ninja fragments. and many items all you spend is valued at + 30k / 40 coupons .. if you need help. watch my video. there it shows you that it is true. Talk to me and I'll tell you what to do https://youtu.be/uBUs0nLEWuE