Mesh not working S1300 firmware v3.102

I have two GL-B1300-28b routers running qsdk-b1300-3.104-0519.img and I’m struggling to configure mesh mode to extend my wifi across my house.

After returning both to factory settings and following Mesh - GL.iNet Docs the green LED lights indicate that the mesh network has been established, but when I navigate to the mesh page of the administration panel of the main router I don’t see any clients reported:

How do I confirm that the mesh network is properly configured and what client is using which router?