Done Island i created is protected from me

Title. I created an island and i can't open the starter chest on it or break blocks

edit: normal mode

 

I've tried restarting my island a few times, and i'm pretty sure i'm not in the preview world.
[doublepost=1499966150,1499965235][/doublepost]

I'm actually not sure if my island somehow spawned in the preview world, not sure why it would
[doublepost=1499969384][/doublepost]would it be possible to just delete my player files from that server? i've got nothing on it so i wouldn't lose anything

 

Never heard of the preview world before. The name is pretty self-explanatory tho

 

Found a way to fix it