Cannot connect to server - new modem

I just installed a new internet modem/router. It's a netflix modem/router combo. I finished the port forwarding, so that's 1 step completed. Usually I can figure these problems out, but currently I have no idea why I can't access the game.
If anyone has any ideas that would help, I am willing to try them.

Edit: I think the problem may lie in the fact that the modem did not give me an ipv4 address, and I think CF is incompatible with ipv6...
Another Edit: Ok just tested it with WTFast... works fine, CF does not work with IPv6 addresses, must have IPv4. So, I guess WTFast is going to get a hell've a lot of customers for this...