Clients can't connect to server/host

If i try to run an extra client for multiplayer testing the host is fine but the client is just a black screen. When i use a dedicated server the client is also a black screen.

I have already posted a question on answerhub 5 days ago but i haven’t gotten any answer yet, but the problem still persists.

Hi Zeldhoron,

Can you post a link to your answerhub post here? I did not find it in the bug reports section of the answerhub. Please keep in mind that we do prioritize the bug reports section over other sections of the answerhub, so when posting bugs or crashes, it is best to post them in that section so we can easily see them.

Sorry, i didn’t know there was a bug reports section. Answerhub post: Clients can't connect to server/host - Multiplayer & Networking - Unreal Engine Forums

I’ve passed along the information so we can get you some assistance on this answerhub post. Thank you for letting us know!