Can't remove port from MyXFi port forwarding

XFi is not allowing me to add a port forward because it says that that device is already assigned. XFi is showing no port forward to delete none at all. I am now  stuck and unable to port forward. Can you please help in removing all port forwards on my router as I am unable to see them or delete them. I'm also unable to add.

I will say to comcast that some of your customers would prefer the option to login to a router directly and not have to use a dumb downed app. This is far more complicated please give the customer an option to login directly to the third party router that you provide. There is no need for an app in the way that does not work correctly....