Realms is not responding to anything

I am trying to get realms running on my switch with another world (50 MB). However, when I try to replace the world, it either says "initializing upload" indefinitely or gives me an error. I also cannot close the realm or even reset the world and another error pops up. It's also hit or miss if I can even join the realm. I reinstalled Minecraft, and have had all the same issues. Please fix