Not loading custom skin pack its change into legacy skin pack

I tried to load mob skin pack and it does not work because of this bug or glitch the legacy skin pack is giving nightmare and I got forced to play roblox because of nightmare I want to be a mob I was thinking to get it back one day but I cant. I was unhappy until I found this website. I also love to prank others by being baldi or gotta sweep sweep. This is unlucky I really need to get forced to play roblox by my nightmare please fix it now please.