You can only change your password from your app, you cannot change it from the web.
If you do not remember your password, you can still reset it as long as you are signed out of the app.
Please make sure to add "firstname.lastname@example.org" to your address book so that you can receive the temporary password email.
Please go through the 'reset password' process. Again, you will find this if you're NOT signed into your account.
Open the Key Ring app and you should be taken to the Log In screen. Here, about half way down the page, you will see a "Forgot your password" in blue text. Press that and you will be taken through the reset process.
Once you are emailed a generic password, use it to sign into your account. You can update your password to one more to your liking by going to the Menu at the top of the screen (three lines), and clicking on "Change Password/Email".
If you do not see the email in your Inbox, please check your other folders such as spam, promotions, social, etc. to see if it was filtered into one of them.
If you still don't see a temporary password email, please email email@example.com. One of our support staff will be able to issue you a temporary password manually. Please provide your account email, as well as a card number or two for verification.