Backup won't load

I made a stupid mistake of bringing all my diamonds and food with me in the End as I was going head-to-head with the Ender Dragon. Obviously, I failed miserably. Fortunately, I had backups enabled and a new one was created about an hour before I went to the End, I've enabled it and it showed the settings icon rolling. Two and a half hours later, It's still spinning. I tried deleting other old backups to clear up some space (even although I only wasted 1.26gb/15gb) but after two seconds the page would just refresh and those old backups would still be there. Please fix this or offer a solution ASAP, I wanna play MC. In addition, I will leave answers to some common questions asked when people experience these issues

1. I'm not getting anything on the log
2. My username is TrackMiJePusioKurac
3.I live in croatia and my service provider is a public company Metkom. I barely have any issues with it, its always 4 or 5 bars with 300kb/s speed on computers. I highly doubt my internet connection is at fault here.

I will be answering all questions as soon as I can and offer everything I can to help fix this issue. Thank you to anyone who choses to help me out.