Multiple shortcode on a page

I created gallery with multiple shortcodes on same page.

It looks good, but when I click they load the same set of 6 videos from the first shortcode.

For example, click on 7th video, it opens the first video. I believe it is because the href is set to #video-modal-1 which is same as the first video.

Please help to fix this.

The page I need help with: [log in to see the link]