Help ._.

I can't join realms all of a sudden. This has also happened with my other xbox account. It always shows "Building terrain" or "This might take a while" but then it disconnects me or says that I have been kicked.. Please notice this quick because I wouldn't want to lose my progress since i have netherite now on my new account. I am having trouble logging in and we also have a competition on going and i need to catch up.. Please Help ._.