not able to switch realm world or download realm world or backups

for the downloading of the world or back ups it never downloads the bar never goes up then it just say error has occurred. when switching world it will download then upload to a part then say the same thing. im not the only one having the issuse alot of people o redit are having it too. also when this gets fix for people who have realms should got on month free becuse of this it sucks so bad i cant do anything i need to do for my group on Minecraft