Connect to the Wifi
From the web browser (Chrome, Safari, etc.) type 192.168.10.1 into the address bar at the top
When asked for your login password use: admin
On lefthand side select Network then pick WiFi
Under WiFi Basic Settings and then choose Network Name ESSID change this if allowed so your device doesn't get confused when the password changes.
Under Encryption: it will read no encryption by default
Select: Wireless Password Key and then select the password field type in a new password
(Password must have 8 characters)
On the bottom right-hand corner select Save
Note: It takes 20 or 30 seconds to propagate the new password
You will no longer be able to access anymore on the current page as the device refreshes so exit the page and wait until the device has saved the new settings.
Go back to the section of your computer, smartphone or device you are using and click to view available wireless networks. Select the new wireless network name and then type in your new password. It will reconnect and you will be able to continue surfing the web as usual.