Connect your device to the TP-Link router
Open a web browser
Enter the router IP address in the address bar
Log in with your admin username and password
Go to the Wireless or Wi-Fi settings section
Select the wireless network you want to change
Enter a new Wi-Fi password
Save or apply the changes
Reconnect your devices using the new password
If you want to change the router admin password, go to System Tools or Administration
Open the Password or Account section
Enter the current admin password
Enter and confirm the new admin password
Save or apply the changes