To change your password (if the Administration Account settings have allowed this type of change):

Browser/Desktop interface

1. Click on the account box (top left where your username and avatar are shown)
2. Select My Account
3. Select Profile
4. Enter your new Password
5. Enter the same password again in Password Confirmation field
6. Click on the SAVE CHANGES button

Mobile Interface

To change your password in the mobile client, click on the Preferences button  select Edit.
Scroll down to the bottom of your profile and select Change your password.
When you have finished, select Save.