@Bijoy21 

Hi,

After you reset the router, the SSID and password would become the default one.

Make sure you are using the default WIFI name and password print on the label to connect.

And please also test both 2.4G and 5G.

If you still failed to connect, please check the error message you get. And you can also use a wired device, connect to the router, change SSID and password and connect again.