Roller ball template multiplayer

hey everyone. i started to learn ue4’s networking and i was testing it with 3rd person and it was quite fun!
i decided to test it with Roller Ball template, it turns out that there are problems with pawn.
i run the template with ue4’s build inside feature of networking and the server side works fine and ball rolls around and its fine in the view sight of client. but when i switch to client and move the ball, it doesnt move in server side window,
i know why is this happening, i searched alot but i cant find any solution for this problem.its been 6 hours now im on this problem, help! thanks x_X