Hi 

I have a Deco Mesh consisting on 8 access points with the main AP running in router mode

I have a TL-WPA7517 KIT with the TL-PA7017 part of the kit connected to the Garage AP (plug is located next to my DB Board) and the Wifi Extender part inside a 6mtr container approximately 40mtr away. 

If I move the TL-PA7017 to the plug next to the main "Study" access point the TL-PA7017 is unable to connect to the TL-WPA7517 located in the container

I purchased a TL-PA7017 KIT as the backhall to the Garage router is via wifi from the Lounge Ap and I thought it would be better to have it running over the powerline with a direct connection to the Study Ap. When I plug the TL-PA7017 in however the whole network stops working and I am unable to see any of the modules in the TP-Link pc app. 

I assume that I am creating some sort of network loop of some sorts but have no idea as to how to fix it.

Any suggestions as to how I could get this to work? 

I have also been considering using a power cable for my connection to my stables and would like to know if the TP-Link DECO PX50 powerline adapters will work with these modules or will they be totally seperate?