Log in to your HiddenLevers account and click on your name displayed in the black bar in the top right corner of the screen. This should open a drop-down menu, click on the option for Account Settings:

A new screen will open titled My Account Settings with five tabs beneath the title - Preferences, Account Info, Billing Info, Branding and Compliance. Click on the Account Info tab and you can then enter a new password into the Password text box:

Enter the password again in the Repeat Password text box and then click the blue Submit button to save your new password.