Port Forwarding and "Advanced Security"

When you set up a Port Forward with the Xfinity App, it seems to only last a few days. You also get a warning message about security, and "Advanced Security" turns off at the time your establish the Port Forward. But the Forward doesn't stay in effect!

The App also warns you about turning off unused ports. I am beginning to think that the problem is not on my computer, but that there is no way to set up a long term Port Forward before "Advanced Security" gets in the way.

So is this true? How can I set up a long term Port Forward that I and not "Advanced Security" decide to turn on or off? There is nothing specific about this that I can find.