Realms world not autosaving

I did a couple hours worth of work on a realm that I am a part of and when I left the game for an extended period of time and came back I joined back in to find that all my progress was gone. I though it might not have saved before I left the game and just remade what I did before. After leaving a 2nd time and coming back later my progress did not save again I had the owner of the realm look at the backup logs and they didn't make since for example one said that something that was backed up 3 hours ago actual was only 2 hours and that there were 2 backups with a 4 hours ago time stamp but one of the times said 4:30 and the other said 5:30 which did not make since. we then tested by logging in and out at different times and nothing happened. I then remade my stuff for a 3rd time just to come back 2 hours later to the game failing to save my progress for a 3rd time.