not working downloaded?

[TDog0h9]

i downloaded it to get around my school blocking, but i launched main and its just a grey screen. does this require a certian program to launch or somthing?

[RonXTCdaBass]

i've downloadet and unpacked. it runs at my win7 PC wrapped in a CEF as standalone (i think its node based)... and at my local webserver (win10).
but i think it runs maybe only the half of the whole packet.
the intro-minicity runs with cars, but if i start a new map, there are no cars, no day / night, or winter... and a high-map saved city load at the next try only flat and the buildings are flying in the air.
i've tested on a free webspace but the hoster dont allow "wasm" files, so i renamed into "draco_decoder.warum" and changed in all .js files the called filename.
in the firefox console i can see the renamed file is accepted, but still no 3D Cars (only the images at the ground), no day / night and so on...
so what can i do to run this really great City complete working?