cant connect to a realm

so I can join the game but nothing happens all that I can do is place down blocks and walk. I can not access a chest or shoot an arrow or anything else. then 20 seconds after joining my friends' realm I just disconnect. then when I join back I just go back to where I joined in originally like I didn't do anything. also, note than I have no connection issues with anything else or any issues with any of my other games.