A couple of things before setting up the countdown banner:
The feature is exclusive for Power plan and above.
The banner will reflect only after the app is updated. You can write to firstname.lastname@example.org to update your app.
Here are the steps to set up a countdown banner -
Go to PlobalApps Dashboard
Go to Customize >> Home Screen Design
In the Element section, drag Countdown Banner to the left
4. Go to Edit
5. Select the collection/product/URL you want to link to the banner.
6. Enter the title.
7. Select start & end time.
(We will fetch time zone from your shopify store)
8. Add Image.
(Recommended Image Size is 1000:250 (width:height))
9. Click on SAVE.
10. Click on Go Live.
Hope this article was helpful :)