1. Click inactive
Go to the sites tab then in the top right corner there are active/inactive tabs. Click the inactive tab.
2. Select site
Hover your mouse over site name that you want to make active again. A green tick will appear, click on it to reactivate the site.
3. Confirm to reactivate
A popup window will appear asking you to confirm that you want to reactivate the site. Click reactivate and the site will appear back in the ‘Active’ tab.