i made a guest account just to kinda mess around hoping that making a guest account would let it be wiped when i closed the game, but then i made a real account and am stuck with the name i chose. it's cute enough but i wanted to have a different name for my actual account lol

ye... name cannot be change once you choose it. Making real account will save your game data in our server, but yeah guest account will wiped once you delete account progress (close the game still save on your local device)