Just purchased an add-on but it says it’s not active
Go to the JReviews admin license screen. Clear the local key text area and re-submit the license number. This will fetch a new local key that includes the recently purchased add-on information. If that doesn't work submit a ticket.
In Joomla you can reach the license screen from the Joomla Components dropdown menu as a sub-menu of JReviews.
In WordPress you can reach the license screen from the JReviews sidebar menu dropdown.