How to change my WiFi password if I forgot it

If you're forgotten your wifi password, if you have a device that does remember the password, you can log into the router's gui to see/change wifi settings. Or if you have a device thats hardwired into the router, you can log in to the gui that way to see/change the settings. you list using the a6210 and not a router model number. If its a netgear router, this is the procedure that'll let you change or see the wifi info. 

https://kb.netgear.com/23439/How-do-I-change-my-NETGEAR-router-s-WiFi-password-or-network-name-SSID