Unable to forward ports from xfinity.

Hello everyone,

Previously I used to used router(10.0.0.1) for forwading the ports and it used to work fine. Then I wanted to change the system for forwading the ports and the porblem started. Even though i have added the ip address i am unable to forwad the port. Then I tried Xfinity xFi for forwading the ports. I have tried every thing Resetting the router, deleating the ports and adding them again, also going back to using the router(10.0.0.1) setting and adding them again. But nothing is working. Can someone please help me.

Thank you