Can only the Internet settings fail on the router?

Question

network hardware

On the tp-link router, the settings have been lost, but only for the Internet, the password is the same, Wi-Fi has not changed. What could be the problem?
Access to it is limited and it became interesting because of what they could fly off.
Thanks in advance)

Answer 1

Maybe. On tp-link, anything can happen.
He can even stop being a router if he wants to. And not just on a full moon.