All my worlds gone when I got something from store

Ever since I got the founder cape skinpack my worlds have VANISHED. I went and got the skinpack because there’s a Cape on the people and when I went back no more worlds. I have spent countless hours on those worlds and would really like them back. If there is anyway you can help please do.

I’m on IOS 12.4.1 but it doesn’t let me do that for some reason