Had to reset the Orbi satellite (RBR50 connected to Nighthawk X6) - Has a leftover wifi connection

[Mark-S]

I had to reset the Orbi RBR50 connected to the house (this is after my brother relocated from Manila back to Vancouver), which is connected to the Nighthawk X6 router. The problem is that while it's currently okay and I had to start a new wifi connection, there's a leftover connection that I need to take out.

In this case, the new wifi network connecting to the RBR50 is "MainL" while "Main" is the old connection. I'm not sure on how I can resolve this since the thing had a hard reset by pushing the back hole with a paperclip. Unless I have to connect the cable connecting the Nighthawk X6.

I'm providing the photos of the two devices with the serial numbers and all that jazz.

https://postimg.cc/mcmjNPSf (Orbi RBR50)

https://postimg.cc/Yvfb0nGS (Nighthawk X6)

https://postimg.cc/gwBz9KKM (Iphone X settings with "MainL" being used and "Main" as the redundant wifi)

FYI - The Orbi RBR50 is at version 2.3.5.30.

[FURRYe38]

Please don't post links to pictures of the MAC address and Serial numbers to your routers. This is not safe. 

Log in to the main host routers web page and ensure its' wifi is fully disable. Log into the RBRs web page with a web browser and make any SSID name changes there. 

[Mark-S]

FYI

Whoops. Okay. Maybe I should have censored it out. Should I login to the Nighthawk without connecting it to the Orbi? I don't have a desktop that I can use and wireless is the only option I can try. I'll try it later tonight after Chinese New Year dinner is over.

PS - Not sure if a mod can remove the links to the Nighthawk and the Orbi at least. FYI, the prompt after using the new wifi linked to the Orbi goes to the DD-WRT page, which I suspect is from the former after I had to reset it.

[Mark-S]

One more thing I have to disclose. The Nighthawk X6 and the Orbi from my room is connected to the ASUS-AC68U.

The ASUS is connected to a wifi router provided by an ISP.

[FURRYe38]

This would be a double NAT 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 NG 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 NG router gets from the modem.