When kasa couldn't accept your account information, did you see some error message? Perhaps you typed in a wrong password. You may have a double check. Using tplinkclound.com to check the cloud id...

You may have a try to restart the plugs. If restart can't help, have a try press the settings button on the top for 10 seconds to reset the plugs and reconfigure it again.

That mac address it the specific one the extender using to communicate with the router. I checked my router's DHCP list, I can see the Mac address of clients connected to extender's 5G and 2.4G, but...

Put in some keywords in the Content Restriction part. This can help to block related website. Here is an instruction related to parental control: http://www.tp-link.com/en/faq-1124.html

Is the USB light on? You need to return it and get a replacement from your retailer or TP-Link if the usb light is not on. If the usb light is on but the router can't recognize the the disc,you can...

ejh2854 wrote To all, thank you for your questions and offers of assistance. TP-Link Tech Support has been extremely responsive via email, and I believe this matter is now resolved- I borrowed...