Here's how to change the cover image on your Monthbook.
For iOS:
On the My Books' tab of the Chatbooks' app, tap into the Subscription you want to edit.
Tap the Monthbook you are working on.
By the current cover, tap on the pencil icon to edit the cover.
On that screen, tap "Change Image".
Select the image from the current photos in your Monthbook that you want for your cover.
Tap "Use this photo."
You can also select the image you want for the cover following these steps:
Scroll through the current draft and tap on the image you want to use for the Cover.
Once you've selected that photo, click the 3 dots in the upper right-hand corner.
Tap "Use as Book Cover"
Crop if needed by adjusting the photo.
Tap "Apply Crop".
On the next screen, tap "OK" to continue
Then, tap "Done" to go back to the book.
Scroll back up in the Draft to review your Cover.
For iOS:
Video how-to on how to change your Monthbook cover: