You can easily change your password at any time, once you are logged in:
- Simply open the app, and tap the menu icon located in the upper left corner of the home page.
- Once there, tap "Settings."
- Next, tap "Change password", and type your new password. Then, tap "Retype password" and enter your new password again.
- After this, tape the "Save" in the upper right.
Voila! You've changed your password.