Parallax Gravity Conflicts with my Gallery

I have a gallery page on my website:
https://ultimatebeautylaserspa.com/gallery-page/facilities/

After installing the Parallax Gravity lite plug-in to create a landing page my gallery page breaks periodically. I have not been able to determine what causes the page to throw a 404 error, but to resolve it I just deactivate the Parallax plug-in and re-activate it and then its fine again. Until it decides to stop working.

Any thoughts on what I should look into?

Rich

https://www.ads-software.com/plugins/parallax-gravity-landing-page-builder/