Port Forwarding Issue Router RAC2V1K - Time Warner Internet

This question is about "Port Forwarding Issue Router RAC2V1K", with Time Warner Cable internet and apps. Hello there,

I've had serious difficulties in setting up point forwarding for my router, a RAC2V1K. I'm able to set up most of the prompts without difficulty, save for one: Public IP. Whenever i attempt to, the prompt is always greyed out and hitting the refresh button does nothing.

Because of this i havent been able to have the port be detected by outside sites. Is there anything i can do?

Thank you

Port Forwarding Issue Router RAC2V1K?