Try entering the desired value in all three fields and check again, make sure the new value you enter is different from the ones that were already in the field, so if it says -1500, try -1501
I find it curious that chests retain their "cheated" value after a restart of the game, how does that even work?
That is if you reset the chests by spending coin.
Yeah I'm having the same issue which sucks because the Krypt is locked behind 2000 and 3000 green skull requirements. SMH..
Yeah, I'm stuck there as well. I've got about 350 skulls and no idea where to get 1650 more. I've even reset all the chests hoping to get more skulls but so far I only got about 50 so it may take a while.