tplinkwifi.net is the web page for the TP-Link Router Login and 192.168.1.1 is the default IP address which users can use when the tplinkwifi.net stopped working. If the user faces the issue with both web page and IP address then Clear all History or the Browser or try to open the webpage in the different browser. Make sure that ethernet cable not be damaged if the user found any breakage in the ethernet cable then change the cable immediately. Sometimes these kinds of issues occur because of Firmware Update, so please check for the firmware update of the router.