Spectator cam doesn't work in play mode

Hellooo everyone. I’m having a pretty weird problem here. I’m quite new to Unreal and using this free UE Marketplace asset for my artistic project. Right from the start I wasn’t able to use WASD keys in play mode to navigate across the map and this is pretty much still the issue. I tried out changing different game modes etc, but nothing seems to help, I think I’m missing something critical here. Here’re the maps and modes settings of the project let me know if I need to send anything else. There were a similar thread on reddit where people were recommending different things but I couldn’t implement those recommendations due to my lack of skills, but sounded like it could be exactly my problem. Reddit - Dive into anything

Which one?

Doesn’t it have an example level?