Hello,
You can create your own promo pop-up by following these steps:
1. Go to WordPress Dashboard > Navigate to HTML Blocks > Add New.
2. Create a New HTML Block – Add your content (text, images, buttons, etc.).
3. Publish the HTML Block.
4. Go to Theme Settings > Promo Popup.
5. Select the Newly Created HTML Block from the dropdown.
6. Save Changes and check the front-end to see your custom promo pop-up in action.
If your newly HTML Block is not saved, share the wp-login details so I will further check on your site and give you a possible solution.
Best Regards,