trophy cosmetics broken

i have unlocked achievements that should give me cosmetics, but no matter what i do, the game does not count them. for example, i have when pigs fly. i saw i get some boots for it, so i checked to see if i had it. i did. confused, i went to my all survival world and repeated the action again. after that, checked the item, and it was still not there. also, after unsinking and re-sinking, my founder cape was gone.