How do I restore to an earlier version of a Canvas page?
1. Navigate to the Page
Open the Page that you would like to restore an earlier version of.
2. View the Page History
In the top right, click the Settings Gear and select View Page History.
While you can restore to an earlier version of a page, you can't restore a page if it was completely deleted.
3. Restore an Earlier Version
Find the earlier version you want to restore and click on it to view the changes to the page. Click Restore this revision to restore your page to the earlier version.