The event is becoming more painful and tedious the longer it goes on and I'm only at lvl 15. The number of missions per level should be changed to 1 (instead of 7). I think that could fix a lot of the issues
This event feels very tedious and unfun. My suggestion is lower the number of mission to unlock a reward to 1-3 instead of 7. Remove the 5 hr cooldown and make it so we can redo levels to get the tokens we want. You can put a 12 hr cooldown on doing the same lvl again or something and have gold...