Fixed my own case, apparently the server's DNS is slightly different...
Old DNS:
play.net-7.org or 87.160.15.67
New DNS (working):
play2.net-7.org or 87.106.15.67
Ran cmd ping and tracert, everything is fine with the new DNS.
Can't upload my screenies, too big.
Edit: To change your default DNS, go to your Net-7/bin directory, then open up LaunchNet7.cfg
Change the highlighted line to the new DNS ((play2.net-7.org) OR (87.106.15.67))
Save.
I do recomment to create a backup somewhere just in case.