After you change the password following this instruction, please complete these steps below to sync your Mac computer password to the new password. 

1. Restart your computer. 

2. Log in to your computer with your OLD password. 

3. This window will open automatically for you to type in your username and your NEW password. 

• Otherwise, click on the key icon on the top right corner near the Wifi and Date & Time icons  and then click Reconnect