Plutonium

I go to join servers and it goes to the loading screen of that map and never loads. It will say waiting for other players as usual but it never gets passed that. Can I have some help? Keep in mind it only started doing this to me a few days ago but before it was perfectly fine.

If you look on yt you can find the files of the guns and stuff you need and also the videos should show what folder to drop the files in the root game directory.