To reactivate a virtual exhibition that has been archived, you would need to:

  1. Head over to the My virtual exhibitions section.
  2. Select the Archived option.
  3. There, you will see all exhibitions that were archivedClick or tap on Restore on the exhibition of your choice
    Once you click or tap that option you will find the exhibition in the Unpublished section, where you can edit and publish again.

Read related article: What's the difference between a Published, Unpublished, and Archived Virtual Exhibition?