RBK852 Satellite Disappears when Wired via Ethernet

[tinacioffi]

My RBK852 AX6000 Satellite does not appear in my device list once I connect it back to the Orbi Router via Ethernet.

My router is set to AP Mode In order to work with my ISP's modem (that I'm told does not have a bridge mode function). The question I have is does the router-satellite mesh system still broadcast the same strength wifi in AP mode? Or is the Satellite useless in AP Mode? I'm hoping that the satellite is not on device list because it's connected via Ethernet but that it is still extending the wifi signal in my home. Please let me know. Thanks.

[FURRYe38]

What Firmware version is currently loaded?
What is the Mfr and model# of the Internet Service Providers modem/ONT the NG router is connected too?

How are you connecting the RBS to the RBR? IT should be connected in either one of these configuration when ethernet connected:

https://kb.netgear.com/000051205/What-is-Ethernet-backhaul-and-how-do-I-set-it-up-on-my-Orbi-WiFi-Sy... 📡

How long are you waiting to check the RBRs web page after connecting the RBS via ethernet? 

[tinacioffi]

Firmware: V4.6.3.16_2.0.51

I do have it configured as in the third illustration you showed me. It's going into a switch. 

When I log in through the IP Address it says that there is a satellite connected but when I look at the device list the satellite no longer appears. If I pull the ethernet cable out and run via wifi it appears in my device list.

i waited over an hour before checking the RBR page. 

[FURRYe38]

What is the Mfr and model# of the ethernet switch in the configuration?

If you connect the RBS directly to the back of the RBR with out the switch, does the RBS appear correctly?