@ArcherC8 I have this same issue with the same device model. This is a bs answer. And it does not work. The device will not answer the tplinkwifi.net, tplinklogin.net, or 192.168.0.1 . 2.4g and 5g...

Would not accept my device model. However ... The device is an Archer C9(US) and after several years of good service MY Device no longer allows internal tplinkwifi.net access or 192.168.0.1 access to...