Hello all. I recently purchased a 3-set of Deco X20 and it's absolutely awesome. However I ran into a little issue. Two of the 3-set are connected via Ethernet to the house infrastructure but I want to connect the third one in a area where Ethernet is not available. I got a set of old AC1200 powerlinesfrom TPLink but when I connect the Deco to the Ethernet port of the powerline, it does not sync the with rest of Decos, it fallsback to wifi. Are there any known incompatibility between the devices?

Thanks in advance

EDIT: Due to formatting error in mobile phone