I keep getting this error on #Minecraft when I try to add a new realm, and nothing ever happens later. Hopefully @MojangSupport is aware of this because I cannot add my new realm that I need to test maps on.

Go ahead and contact us at msft.it/6019wvrH3 so our Realms team can look into this for you. ^NS

I never did end up getting a reply from @MojangSupport about this issue, but I wanted to come back and mention that if anyone has this issue in the future I managed to fix it by uninstalling the game and downloading again. Make sure to back up your stuff. Cheers.