"It was not possible to connect to the server"

"It was not possible to connect to the server" I tried to play in multiplayer on the server of a friend added on microsoft and this is a disservice for such a big game, to have bugs of things he promises. I want this problem to be resolved if I do not have to ask for a refund and if necessary I will take appropriate measures. Version 1.16.40 MCPE nick : AyumiAyo