ApiRTC "peertopeer_call" not working on host

I've downloaded "ApiRTC-examples" and opened it up by Xampp on a Windows 10 machine. In this case, everything goes well and I can connect to the "peertopeer_call" page on the machine by other clients over the local network.

I have a 2GB host on the internet and uploaded "ApiRTC-examples" there. The problem is, CSS not loaded and it doesn't give me any number for registration.