@decoinRI 

Hi, Have you connected a laptop via an Ethernet cable to the slave UeeVii P2P to confirm the UeeVii P2P wireless Bridge has successfully extended the network to location B?

Wait for your reply and best regards.

  @decoinRI 

Thanks for the update.

decoinRI wrote

  @decoinRI 

I have not (not easy to access network b location).  However, when I connect wireless bridge master directly to modem wan port network b works without issue (so i know wireless bridge is able to successfully pass signal). It only doesnt work when configured as depicted.

Do you mean it used to work well in the following way:

By the way, when Deco network b is not working, is the LED on the main Deco 1 solid red?

Have you checked the IPv4 address on the Deco APP>Network B>More>Internet Connection>IPV4, are they all 0.0.0.0? if not, what are the IP addresses?

If we try to change the internet connection type to static IP and manually input the IPV4 address to be within the LAN IP range of Network, would it make any difference?

Best regards.