It's been an issue for a very long time, that you can't join your friend's world even if you receive the invite and have a good connection, it seems it's different from account to account since sometimes it says unable to connect and sometimes it's stuck in an infinite locating server screen and sometimes it barely works, it also seems region and location affected too and it occurs on all platforms of minecraft bedrock edition! Btw it says Resolved on the status but it's not!! Please fix it!