Hello Rod,
Thank you for reaching out and for your question regarding the Lightbox functionality in the Travus template with SP Page Builder.
Apologies for any confusion caused. There is no issue with the Lightbox feature—SP Page Builder is designed to use a single image field in this case. The image you set in the Image Addon serves both as the main image displayed on the page and as the image that opens in the Lightbox view when clicked.
Simply enable the Lightbox option in the addon settings, and when a user clicks the image, it will automatically open in a larger view using that same image.
If you were expecting a separate option to upload a different image specifically for the Lightbox, please note that this functionality is not available in the current implementation of the addon.
Best regards