1. An AltiumLive account user can reset their own password from within the program's license management page. 2. An AltiumLive account user can use the AltiumLive sign in page: https://live.altium.com/#signin 3. A member of Group Administrators can use their dashboard to reset an AltiumLive user's password by using the Deactivate button, then click the Activate button If you get this message, you will need to use one of the other options: 4. The user or a Group Administrator can contact us to reset the password from here: https://www.altium.com/support
Here are links to more documentation with more detail: https://www.altium.com/documentation/altium-designer/altium-dashboard-managing-users#resetting-a-users-altiumlive-password