@MKPAUL73 forget google, oh and don't use the app.
This is best done from a wired connection direct to the router, it can be done wireless, but you will have to remember to "forget" the connection, then reconnect with your new password.
From the link I provided earlier:
- Browse to http://192.168.1.254 (This is the default local IP address of your router. If you've already changed it, use your own) on a computer or device that is currently connected to your router (either wired or wirelessly).
- Click on the "Advanced Settings" tile followed by the "Wireless" tile.
- The router login screen appears. Enter its Admin password as printed on the bottom of the product label on the slider of your router (This is the default Admin password of your router. If you've already changed it, use your own.) & click 'OK'.
- The Advanced Wireless settings page appears. Near the foot of the page you will see in the Security password box the default WiFi password in clear as printed on the product label of your router. Here overtype the new wireless password that you want to use. The password must consist of 12 to 63 alphanumeric characters.
- It is also a good idea to separate the wireless channels by turning ON the button near the top to Separate the Bands. . Then the 5GHz SSID (Network Name) will appear starting with "5GHz-" & the 2.4 GHz SSID not starting with "5GHz-". You may then change both of the SSIDs independently. They don't need to be the same but usually are.
- Click the Save button at the top of the page.
- Reconnect your wireless devices to the router using the new wireless settings.
