Log into the Web App
Click on your profile image at the top-right and select Settings.
Navigate to the Account section.
Click on Change Password or Change Passphrase.
Enter the required information and click Save.
Please ensure to enter the verification code received in your account email
On your Android device:
Click on your profile image and select Settings. Make the required changes.
On iOS device:
Tap on Shares or Storage, then click on Settings listed at the bottom of the page.