Failed connecting to realm

Hi, so recently me and my members have been experiencing some issues with trying to join a realm but we keep getting the same error message 'Unable to connect to world' and I tried a 24 hour rollback and the realm didn't want to accept the rollback it kept loading for like 30 minutes and had no response. Unfortunately I can't put a video because it would be over 10.00 MB and when i tried removing some mods it would just load forever and then soon just crash the game or just automatically bring you to the menu page.