Hi @chalearmporn Doungsonk,
Those restore links are temporary database restore points, meaning a point in time to where you can request a backup restore of your database. I believe that option is only available in Enterprise Cloud Production environments.
Clicking the Restore link will obviously not automatically restore the database to the chosen point in time, but instead it will open a support case where you can request access to a temporary OutSystems Cloud database. OutSystems will always ask for confirmation of the exact date and time before moving forward with rolling back your database.
Furthermore, there is a 15 day retention period, so you could potentially restore to any point in time within those 15 days (not only the times listed in Lifetime).
Hope this helps!
Regards,
Nordin