Devices using wire connection to WiFI pods cannot access the Internet

I have a new Wi-Fi pod with a QNAP NAS connected via Ethernet.  When I first installed the Wi-Fi pods I could access the Internet from the NAS and access the NAS from my wifi network.  Recently however, any devices plugged into the Wi-Fi pod via Ethernet cannot access the Wi-Fi network and neither can devices on Wi-Fi access the NAS.  I can plug my computer into the other Ethernet port on my pod or into a hub plugged into the pod and access the NAS via Ethernet and the Internet via Wi-Fi.  Any devices connected to the Wi-Fi pod via Wi-Fi can access the Internet with no problem.  For some reason nothing connected via Enternet to the Wi-Fi pod can see the Xfinity gateway.  I've tried rebooting everything at various times with no luck.  I've even tried swapping Wi-Fi pods.