Alex, thank you for this great programs. Having tried most of the quiz programs available, I am loving using this program.
I tried several LaTex/Math equation editors and the only one I could find to work with your plugin is MathJax. It’s also my least favorite, mostly because their documentation is so poorly written and organized. Compatibility with the WP QuickLaTex plugin would make your quiz program truly first rate.
LaTex is mostly styling, but also has calls for specific symbols and formatting for math equations. I would recommend installing the QuickLatex plugin and see if you can make tweaks (probably to your .css). It looks like your css is overriding the Latex styling or there is a shortcode syntax conflict.