I have tried contacting the developers of The Grid for a solution to this but they have referred me back to you:
"For any question or issue, please contact the theme author directly. He will handle support for 3rd party plugins included with the theme.
If you need direct support as well as automatic updates in the backend, you can purchase a plugin license. With a valid purchase code of the plugin you will be able to have support."
Apparently they have a custom Javascript solution to stop ALL images from opening in the lightbox when clicking on one thumbnail in the grid. I would like only the images relating to that particular gallery/portfolio post to open in the lightbox. They are apparently not willing to share this solution with customers who got The Grid as part of a theme.
Can you help, please?
Thank you,
Wizard247