You may have some kind of censorship or blocker on your network. One way to get around this is to use a VPN. There are many free ones out there but I would recommend TunnelBear, its a free VPN that I use personally. Every month you get 500Mb free and you can get an extra GB just by tweeting...
HI guys, I'm an armature game designer and I'm currently stuck for Ideas for a new game. If you guys have any then please leave them down below! And please remember, I can't make AAA titles.:D
Sorry I'm going away on holiday for 1 week so if you can wait until then, then I'd be happy to help. But because you probably don't want to wait 1 week you then I suggest you find another GFX artist. Sorry :(