I am not able to delete anything through Windows 10. Thank you. We are continuing to monitor the situation to ensure that the best possible service is provided to our customers. This does explain the slow down I have seen in my speeds frequently. I have always had my router set at WPA2 encryption, since purchasing it a year ago, but will try changing the encryption, as you suggested. Tried to block that MAC? Due to COVID-19 we are still experiencing unusually high call volume. Did you check registry to see if any sign of it there and if it does delete it. Check out the screenshot- believe this was on windows 7. It does not show up on my router web page, where all my computers and other devices are listed. Select Wireless from the pop-up menu. The only information I can get, is it is a ZyXEL ABS. Although not listed in Netgear Genie, Windows 10, in Network computers and devices, show a ZyXEL access point, (under the Netwok Infrastructure section) which I do not recognize and cannot get rid of. Do not show this page next time" and click Apply to keep the default password. Wi-Fi Setup. Manual WAN setup.