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:
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