As title says, my ISP connected WAN cable that comes from their modem, and according to the modem's settings page, which I can access, Network mode is router and wireless mode is station.
The problem is that I can't access WiFi router's settings page; I can't access login page at all, since 192.168.1.20 is directed to Modem settings, and using router.asus.com:8443
does nothing, and it fails to connect.
I know my WiFi router is used to transmit WiFi because the modem has no such capability, and the WiFi name and password is one I previously configured on the router.
Basically, it is my router that I bought, and ISP didn't provide it. I configured it and it worked somewhat good, if I remember correctly it had some minor problems as in connection issues and such, but it worked decently. They came to fix it and put WAN cable into LAN, they might've done some changes to the Wifi router settings too. It is now working perfectly, but I do want to change some settings on Wifi router, such as password for my WiFi.
How can I access the WiFi router settings without doing a factory reset on WiFi router, since I'm not sure which, if there are any, settings my ISP changed on it?