Popup Modal Interaction not working

Hi all,

I am building a landing page (the page I am referring to is ER Membership Waitlist) that features a popup modal signup form.

For some reason, I cannot get the animation to work (more specifically, clicking on the button with the animation applied does seem to open the form, however, it is not visible on the page).

Would love someone to look at this. I am using the exact same interaction and lightbox element on the homepage inside the footer and it does work there. I simply copy pasted the symbol, unlinked it and renamed the class and set up the animation specific to that class.

Here is my read only: [LINK][1]