can apply a realm backup or join my own realm

What I expected to happen was...: 
reload a backup and play

What actually happened was...:
wouldnt let me load the back up and wont let me join the realm i own

Steps to Reproduce:
1. im sure as hell you can figure it out just from the descrition
2.  the affected version is 1.14.3 cause it dosnt seem to show it in your list
3. ...