@O.mnd It seems that your PC failed to obtain IP address from your router via extender. So what's the model No. of your extender and hardware version? 854RE_V3 or other. Just check the label. or...

@Evie Hi There is no default routing on C7 because the WAN port is not used. Our router doesn't know how to reply this address because of lacking routing. I think you need use the WAN port so that we...

@19011980 Hi You can buy it on amazon: https://www.amazon.com/TP-Link-Wifi-AX1500-Smart-Router/dp/B07ZSDR49S/ref=sr_1_1?dchild=1&keywords=tplink+AX1500&qid=1588995191&sr=8-1

@JMcDermott Please refer to the instruction below to troubleshoot: https://www.tp-link.com/en/support/faq/794/ Hope it helps!

@DanielAiching Deco P9 can work with the TL-WPA4220, but unable to build a powerline network with the TL-WPA4220. Deco P9 can only build a powerline network with Deco P7/P9. In the network diagram...

@Frenshow Please help to confirm if you are using 3G/4G Router mode or Wireless Router Mode via LAN/WAN port. If you are using 3G/4G Router mode, please try to change the Interface Use by TR-069...