No those tips do not help. The only way to fix is to uninstall and play again until chest reaches 35 then repeat. But this means that all items won are also lost as none of it is saving
Petopia is a ridiculous event. For the players in the higher levels the event is much harder than for those just starting off. The rewards for this event are pathetic.
And again today the episode race started. I logged out for a few hours and when I came back it had gone. What is King doing? Also so many of the games are now clear 100% to finish. This is just becoming a waste of time game.