I've got a TP-LINK TL-PA2030KIT 200Mbps Powerline Adapter that I ordered back in 2015 (https://www.amazon.co.uk/gp/product/B00FEDTWJI/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1). No longer available to buy.
I've got one of these plugged directly into the router via ethernet cable, as shown below:
I've then got another one upstairs which is connected into an Ethernet cable to a laptop, all working fine.
Today I've bought another one, as I wanted to connect it up to another PC in another room via Ethernet. It's a newer version, as shown below:
Whatever I do, I can't get it to work. Now I do have the Tether App and hooked this up to it, but actually the older system isn't showing on this under 'My Devices', but it just works. Can someone help me get this set-up? Or is it a case of having to buy a whole new system?