hello to everyone
i just managed to do a private server with my cousin and finally, after some problems to put the server online for him, he can login on the server
and i can too so till now everything good
but the problem is after he logs in, he sees the world and after that black screen
he sees me and then black screen,, but he has no crash
if he watches his coordinates it results that he's falling under the world
his y coordinate reaches -20.000 and going down
but i see him near me, he results on the server and even moving sometimes
for a short moment after that it worked and we played together but after he died and respawned it became the same black screen and falling again
the problem is that he has a good connection for the internet and he has a 4 giga ram dedicated for the game from technic launcher
so why is it happening for him?
(for me everything ok)
any solutions?
thanks for the attention