Hey Nicolas,
Thanks for reaching out. While our plugins should work well with general caching plugins, they cannot function on a static page. Our plugins are built to work with WordPress, and so require a number of WordPress scripts, AJAX, and other core features that it sounds like the “SiteSucker” software may be stripping or removing.
I would recommend contacting the SiteSucker support team for further insights into what their software does, and would recommend asking them if there’s a way to prevent it from effecting Events Calendar Pro in some way.
Thank you,
George