If you don't believe you should be using a proxy server: yuki.
Check your proxy settings or contact your network administrator to make sure the proxy server is working.
If it is already listed as a program allowed to access the network, try removing it from the list and adding it again.
I doubt anyone will pay 150 to 500 bucks unless that person is stupid rich that they can afford to burn 500 bucks for what i would assume be not even anything near lewd since she always says she dont want to do dirty stuff.
Check any cables and reboot any routers, modems, or other network devices you may be using.
And you could just share it between the people in that group.