Minecraft ios multiplayer not working

Hey so basically I signed into my xbox live account on minectaft pe so I could play online, but when I go into my world and try to invite my friends, they say my microsoft account was disconnected and I need to sign back in, even though I am already signed
in. I tried signing off and on of my account but it still won't work. It's super frustrating and on top of that, they say that the realms aren't available, I can't even subscribe to them (two weeks ago they totally were) I've even tried deleting the app and
installing it again, still not working. Anyone got the same problem or know how to fix this?

:)