I have 2 Deco X50 unit. Recently I added S7 unit to my network. I could use connection preference before I added the S7. But now I cannot use it even with my X50 connected clients.

The problem is I already selected connection preference to my first X50 before I added S7 for my macbook. Right now it sticks to the first Deco even I couldnt see the connection preference option(I already enabled Mesh option after S7). So for workaround I had to remove S7 from my network then remove all connection prefences options and added again.

 So I think I could use connection preference option for my X50 devices. Or the software needs to select Auto option for all clients that connected to the Deco network when a new appliance connected that doesn't have connection preference options.