Performance & multiplayer issues

Basic settings like “edit character” and multiplayer are not working, despite enabling such in the configurations settings & following the tutorials accordingly. In my game, I can’t edit my character, nor import a skin into the game; a problem that I haven't found any solution for it anywhere. Although with the multiplayer I’ve seen more people talk about it (in the pocket edition), I can't find any solution for that either. I’ve tested it in multiple wifis, and the problem is still the same.