Minecraft Xbox live multiplayer

tenia un mundo con unos amigos y mientras veía las configuraciones del  mundo le di a desactivar multijugador lo active de nuevo pero ya no funciono a mis amigos ya no les aparese el mundo y el botón de invitar no funciona

I had a world with some friends and while I was watching the configurations of the world I gave it to disable multiplayer I activated it again but it no longer worked for my friends and the world did not appear and the invite button did not work