To test, open an editor somewhere (for example, create a new Label in one of your topic blocks) and enter a LaTeX and/or Algebra expression surrounded by the appropriate delimiters. For example:
LaTeX: $$$y=x^2$$$
Algebra: @@@y=x^2@@@
Algebra: @@@y=x^2@@@
This should display as
LaTeX: $$y=x^2$$
Algebra: @@y=x^2@@
Algebra: @@y=x^2@@