Modal Pop up has stopped working

The ‘learn more’ button on the tabs cards throughout the page used open a right hand side modal panel that pulled content from the CMS.

It’s not working now and I cannot figure it out, please help!

Preview link

Steps I did below and it starts working.

Choose an element on the animation timeline, then:
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Click right button and choose:
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Select modalOverlay
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Do it for all 4 elements on the timeline.

thank you for replying!
Unfortunately this only brings up the same piece on content from my CMS and has added a few glitches with text boxes.