Evermotion assets not working

Hi, I am having problems with some Evermotion assets. I purchased this asset pack https://evermotion.org/shop/show_product/archmodels-vol-165/12741 however, they all came out like this

They told me that these assets are incompatible with Unreal Engine, but I saw a video on Youtube where a designer was using them. That’s how I found the asset pack. Does anyone know how to make this look right for my game project?