It happens. You create an awesome page, then you accidentally delete it. Not to worry, there is a chance to recover it!
1. Go to the bottom of your layout and click Add Page.
2. Click My Pages.
3. Click on View Deleted.
4. Find the page spread you are looking for, click on it and then click Select.
5. The page will appear as the last page in your layout and you can move it back to where you want it.
How to delete a page: https://treering.zendesk.com/hc/en-us/articles/200016695-How-do-I-delete-pages-