Disabled my Mesh Network Due to No Orbi 5GHz Backhaul to Satellite

Hi - I have a serious problem where my Orbi backhaul connection to my RBS50 Satellite only appears to be connecting at 2.4 GHz which is restricting the speed of any devices connected to the satellite.

 

This is what I see when I look at the status of my RBS50 Satellite:

 

 

 

While multiple devices do connect to the satellite over 5G, their data speed caps out around 30 Mbps - due to the single 2.4 GHz backhaul connection to the router. I used to get 130 Mbps+ speeds over the satellite from the same equipment setup back when the satellite also connected with the 5 GHz backhaul link.

 

As a result, it's actually better for me to disconnect my RBS50 satellite from my system and go back to the single RBR50 (mesh-less) router! I get 50 Mbps ==> 100 Mbps rates to my devices that connect over 5G with the RBS50 totally removed from the system, which is better than anything that connects to the satellite with this firmware regression.

 

I am running the latest V2.2.1.210 firmware. I have reset both my Orbi RBR50 and RBS50 back to factory defaults and used the Orbi setup wizard to reconfigure my system. I haven't changed any of the default settings from the setup wizard, other than changing the router's DHCP server IP address range. 

 

The backhaul used to work fine in my system, but it has apparently become broken somewhere in the intervening forced updates (not sure when).

Please help!