Client player can see Server player, but cannot see his actions

I have set up a simple multiplayer game for my project based on FirstPersonShooter example project. The game starts with the view from static camera and with multiplayer menu shown just like on the client image, for every player.

-Server player clicks on host - it creates a session and opens world with listen option.

-Server player can click on start to spawn his character and can move and shoot as he likes.

-Client player clicks on search, game searches trough LAN and finds Server players session. Join button shows up.

-Client player clicks on Join to join session.

Problem is on the image. Client player should see the same world as Server player is in. He indeed sees the Server player(that tiny gun on right from those 3 boxes in the middle) but he cant see anything that server player does except when he is moving - Like on the image, when Server player shoots the boxes, they are pushed away on his screen, but client sees nothing on his screen, and whats more weird - when Server player goes trough place, where on the client screen are boxes, those boxes on the client screen are pushed away.

I am kinda new to the Unreal Engine, especially to the networking, so i have absolutely no clue where the problem is. Can you help me please? :smiley:

UPDATE: I patrially solved the problem - i forgot to set the projectile that is shooting from the gun to replicate to the clients… :smiley:

But when client joins session where server player was for a while and he had shot something, the map on client screen is still brand new…