Moodle does not recognize math equations?

I imported the `tstat` exercise given in Zeileis _et al._ (2014) to Moodle using `exams2moodle` from R/exams with default settings. But Moodle does not fully recognize the math equations written in both LaTeX and Rmd formats. Is there any way to fix this issue? The function `exams2pdf` works fine with equations but `exams2html` not. [![Moodle screenshot][1]][1] [1]: https://i.sstatic.net/Kf1Ao.png