For anyone who is still looking for an answer, check the sizes. If your level is too small, player wouldn’t work. Cos I had a player start. I had a small level. Everything scaled down cos I don’t know what I was doing. When I created character BP it was the right size. When I dragged the char bp into the level it was half the size of the level. That’s when I knew I messed up. Check the sizes. Hope this helps!