We don't have an option to undo changes, reset your Travel Book to the original version, or reset it to your trip's changes. You would need to make these adjustments manually in the Travel Book Editor.
If you have been making changes in your trip (e.g., changing your photo order or editing step text), and you don't see these changes in your Travel Book Preview; see this article.
To work on a larger screen, you can visit our website on a desktop to edit and preview your Travel Book. In the editor, you can add, rearrange, or remove photos, edit your step texts, update your cover photo and title, choose a theme color, and more!