issue with mesh network and wifi booster

Hi, i have a ton of tech in my home on a wifi tplink mesh deco network, i have a powerline ethernet cable going to my garden which has a external wifi booster eap110 tplink to provide wifi in the garden. I have tried to keep the same ssid and password but sonos up just shows the devices as not connected to the same network, is there something clever i can do with changing ip addresses or something else to make the whole thing work. I want to be able to pick ip and move the ‘move’ to the garden from inside and maintain playing on all devices the same music.