Players can't see any entites on the Minecraft Marketplace Product: "Dinosaur World" by Pixelbiester.

Players that play our map "Dinosaur World" are not able to see any entities (dinos, cars ...). 

I also added some screenshots of people describing the problem. 

Product link: http://mcmarket.place/?id=64b72523-28a6-4db1-80a8-6a9147556212