Wifi Camera will no longer connect to network

Netgear AC1750 R6400 Smart Dual Band Router firmware V1.0.1.70_1.0.44 updated today with Comcast / Xfinity internet service and Arris TM822 modem

Hello,

The wireless router stopped working a month or so ago and when repowered, it worked again.  However, our Vivitar IPC-113 security camera would never connect again.  After much research and calls, I noted:

-It will connect to my verizon phone hotspot without issue

-I turned off all 5GHz broadcasts which only left the single 2.4GHz wifi network to choose from.  No luck.

-The MAC address for the camera shows up under connected devices and is listed as "allowed"

-The SSID for the 2.4 and 5 have different names and different passwords.  No luck.

-I even tried the guest network with different network name and password.  No luck.

-Security options are correctly set to WPA2-PSK [AES]

-Turned off the 20/40MHz coexistince.  No luck.

Any input would be appreciated.