Netgear arlo q will not sync with ATT network (model 5268AC)

I just switched to ATT Uverse for my internet and was attempting to sync my Netgear arlo q, model VMC3040 camera to the new ATT network (model 5268AC)

It worked with Spectrum network and when I was with ATT about a year ago it worked then.

The camera goes through the sync process then stops because the camera cannot be found on the network.