Orbi AX6000 (RBK852) SSID dissappears

What mode is your modem working in? Modem only or router? 

This would be a double NAT (two router) condition which isn't recommended. https://kb.netgear.com/30186/What-is-Double-NAT
https://kb.netgear.com/30187/How-to-fix-issues-with-Double-NAT
Couple of options,
1. Configure the modem for transparent bridge or modem only mode. Then use the Orbi router in router mode. You'll need to contact the ISP for help and information in regards to the modem being bridged correctly.
2. If you can't bridge the modem, disable ALL wifi radios on the modem, configure the modems DMZ/ExposedHost or IP Pass-Through for the IP address the Orbi router gets from the modem. Then you can use the Orbi router in Router mode.
3. Or disable all wifi radios on the modem and connect the Orbi router to the modem, configure AP mode on the Orbi router. https://kb.netgear.com/31218/How-do-I-configure-my-Orbi-router-to-act-as-an-access-point and https://www.youtube.com/watch?v=H7LOcJ8GdDo&app=desktop

Try this, turn OFF the RBS and just leave everything connected to the RBR. See if the problem continues. 

Try the suggestions with AX and CTS values as well. 

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gobblegobble wrote:
What is the Mfr and model# of the Internet Service Providers modem/ONT the NG router is connected too?
Arris NVG589, AT&T Fiber

Has a factory reset and setup from scratch been performed since last FW update?
Yes

What is the distance between the router and satellite(s)? 30 feet is recommended in between RBR and RBS to begin with depending upon building materials when wirelessly connected. https://kb.netgear.com/000036466/How-far-should-I-place-my-Orbi-satellite-from-my-Orbi-router
Roughly 30ft

Any Wifi Neighbors near by? If so, how many?
2

How was the FW updated?
Manually using a computer to install the hot fix FW as instructed by Netgear tech support

How many devices do you have connected?
41

What devices do you have connected?
Computers, Phones, Tablea, Smart devices

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