Hi @user_4477333,
If you mean the home router WiFi password, you can just log in to your router and reset the password on the management page. If you are not able to login to the router, as far as I know, for most of the home routers, there is a reset button, you can just hold down that button for about 8 seconds, the router will be set to the factory setting, and you just need to set your router again.
If you mean the AC + AP scenario, you should log in to the AC and modify the security profile configurations. Please refer to the procedures Configuring a Security Profile.