While Enso tries to automatically select the best photos from your listing to use as the header image for the Boarding Pass, you still have the option to customize this background image.
Here’s how:
Go to the specific listing.
Scroll down on ‘Listing Information’ and click ‘Pictures’.
On ‘Main image’, click ‘Upload Photo’.
If the picture you want to use is among the photos already synced to the listing, click 'Select from Existing Photos'.
Upload the photo.
Hit Save.
Wait until the changes are applied.