@woozle thanks for the answer. So, I've performed the pair method while in NZ. In theory, this made my network secure. However, as soon as I plugged the WiFi-Extender, I was able to connect to...

Hi TP-Link Support Team, I’ve encountered a serious and unexpected behavior with a TP-Link AV600 powerline Wi-Fi adapter, and I want to document it clearly to understand what might be happening....