If you are a Kaleyra Voice Account holder, you’ll be auto-prompted to reset your password every 90 days due to security concerns.
However, if you wish to change your account password, you can click on icon from the top right corner of the Voice application & click on Change password, shown in the image below:
You will be prompted to the password reset page. Enter your current password and a new password and click on “Change Password” to get going with a new password. (Shown in the image below).