What is the correct sequence to RECONNECT Xfinity cameras after installing a new network

I have a difficult home to get great wireless coverage (lots of additions, old 1800s framing).  To resolve some network Double NAT problems I have installed a NETGEAR Nighthawk cable modem to replace my XB8 and using three Netgear Orbi Satellites in AP mode for a single mesh network.  I am now getting 6-800mbps speeds and great mesh coverage.  I have also changed my network names and passwords in the process.  The last part of "getting back to normal" is getting my home security back online.  I called Xfinity tech support to get into the tech menu of my touchscreen and connected it successfully to my new network.  The cameras however are not behaving.  I have tried the reset button on the power block with no success. Was getting a constant blinking amber light.  l I have rebooted and unplugged the cameras several times.  I did get some progress by pressing the reset button on the back of the camera and then going through the process of updating the wifi configuration.   I am only testing this with a couple of cameras for now... At this point I have two cameras connected to my wifi (I can see them in my connected devices list in my Orbi app). The cameras that are now connected show solid blue lights but do not seem to be communicating to the Security display panel and in the Xfinity app show as Offline.  I have tried unplugging these cameras, rebooting them through the app and also rebooted my Security display.  So am I missing a step or do I just need to....

1. Reset all of my cameras (using the button on the camera) 

2. Update wifi configuration on the cameras using the Xfinity app  (AS MY WIFI NAME AND PASSWORD HAS CHANGED)

3. Guessing here.. Delete all of my cameras and re-add them as new cameras (touchscreen or app???)

Not sure about step 3... looking for suggestions????

TIA!