When you need to change your password, you have to do so on your Desktop or Web application. You must also remember your current password. If you do not or if you are only connected with mobile applications, please take a look at this article.

How to Change My Password?

To change your password, 

• Click on your avatar in the top right corner of your Rainbow screen and select "My profile."
• Search for the blue button "CHANGE YOUR PASSWORD" located on the left side of your screen below your avatar.
• Type your current password, your new password and then click on the blue button "APPLY."

NOTE:
Your password must be at least 8 characters long with 1 lower-case letter, 1 upper-case letter, 1 digit and 1 special character.