LOL wish i knew how to. mine crashes every 5 mins but she plays straight for like 12 hours. OMG shes getting desparate. She was running around collapsed prison screaming that if someone told her how to shed pay them 100s. she has that kind of money >.<
There is a way to modify a Fiesta file to reset the block-list but I don't recommend that. Not only has it been said on the Outspark forums that this counts as modifying game-files and is thus against the ToS, but it is risky doing it if you don't really know what you're doing.
The block list itself will reset after an indeterminate amount of time after you relog. If you really want 'em unblocked, you have to re-install the game.