Hi Rudey,
That project was set up with the intention to not use any static lighting for that map. All the materials use an emissive texture so that lighting is not required.
You can change this by going to the World Settings > Lightmass > and unchecking Force No Precomputed Lighting
This essentially turns off static lighting from the map in question.
If you’re still having trouble just make a new map and everything should work as intended.
Thank you!
Tim