FastDL Issues

I am currently hosting with NFO Servers for my web server, but when I add a custom model and then rejoin the server after putting in the web server and the actual server then making the resource.Add for it I get in the server and it

doesn’t work I have to restart my game to actually see any progress then I can see the model and everything else. Is this my web server not manually updating the files or is it Garry’s Mod not loading it I am confused.