Hard wiring Sonos products to Sky router

I have a Sonos Beam in my lounge, and a Play:3 in my kitchen.

The two rooms are remote from the router (and there are thick walls between them all, so I have cabled into the two rooms from the router, and fed both cables into switches.

From the switches I have then cabled into a TV and a Sky Q box in each room, and also cabled into the Sonos Products in each room. They are therefore all on the same SSID by hard wire.

To allow me to have wifi in the lounge and kitchen, I have a TPlink access point in each room, which have been”cloned” with the same SSID.

I have no problem walking between the three rooms with my I-phone, and wifi is automatically picked up in each room, with only one network showing available in each room (same SSID)

However, when I run the Sonos app, and move from room to room, the total system is not shown; only each product in that room. I spent a long time on the phone with support, deleting and setting up a whole new system, but it doesn't seem to have cured the problem.

Any ideas anyone? Thanks in advance