Several times I've used the "Expose Personal Router to the Internet" option under Settings >> Connectivity. It seems to need to be re-set each time the Xfinity router is rebooted.
Well sometime in the last couple days I stopped receiving incoming connections. Then when I went to the touchscreen to expose my router again, I found that option was no longer there.
Has anyone seen this before? I saw a random post that indicated I should plug my personal router into Port 4 on the Xfinity router (it was in Port 1), but that did not help. I've also tried power cycling all the equipment and re-starting them in the suggested order.