Realm roll backed automatically and losing progress!

This happened only today. So I was playing as usual in my private bedorck realm and made a huge underground base and then I Left. When I came back to the realm after 3-4 hours everything dissappeard, even my inventory got rolled backed! I know that only the owner can roll back the realm to it's previous backups but I'm the Owner. I didn't do anything! It rolled backed automatically. The problem is that I can't roll it back to it's original world cause its just like the whole time when I spent the time and efforts in building got dissappeard even from the backups list.