Minecraft crossplay not working on worlds

Ok so today I was going to play minecraft pocket edition with my brother he uses a tablet and I uses mobile phone. And we are from another country so we have listed our minecraft gamertag as our friend. And I invited him but its not working actualy the multiplayer is on. And he can see my gamertag and he clicked on the gamertag I am sure that his network is not bad its so good also as well as me. then he sees conecting to multiplayer and in few secounds it tells unable to connect to world. Then he tried again and again not working and next time he hosted his world for me then I clicked not working. As same screen what happened to him. Then started an ivite only world and invited him not working in this time its more worst than last time I invited him but he cant see invites in his friends option. Or my gamertag. And tried again on his tablet not working😞 . So we tell lets play in server so we joined server The Hive and we are not both he is not like inside the server for he I am not there on his server very bad. Then we tell lets report this buggy thing to mojang studios.So Please Fix it. I need to play with my brother and its going to working which peoples are not possible to play.