For the last 5 years this kit served it's purpose and it worked flawlessly.
Unfortunately some days ago the piece that need to be plug with the router (TL-PA7010) doesen't work anymore.
The product isn't on sale anymore, so I can't buy from official store the broken piece.
Is there another TP-Link that I can get that will work with the old piece that still work (TL-WPA7510)? 

Also If I can find a TL-PA7010, does it need to be the same hardware and firmware version to work with the TL-WPA7510?