Why did wifi disappear on the router at the same time and the web setup interface stopped working?

Question

network hardware

The day before yesterday I installed DNS from adGuard to block ads by the router. Everything worked for 2 days, but when I came today heresy began. At first, the phone saw wifi, but swore at the correct password. I thought that the lag of the router and rebooted it. After that, wifi disappeared for good). At the same time, the Internet on a PC connected by wire works. I'm trying to remove the adGuard DNS server and for this I'm trying to go from a PC (which is connected to the router with a wire and on which there is Internet) to the web interface of the router, but it does not work (I tried tplinklogin.net and 192.168.0.1 and 192.168.1.1 everywhere on the page unavailable). How can you fix it? What could have happened? Thanks in advance.
TP-LINK WR741ND router

Answer 1

You're not Andy McTracher 's roommate , by any chance? He is in the next branch just trying to deprive his neighbor from the Internet: How to turn off the Internet on the router / the router itself via wifi?