In order for Product Options to display on a theme, there are a few snippets that need to be added to the theme code in various places.
Trial themes do not allow you to edit any of the theme code files, which prevents us from being able to add the required snippets to the theme.
Since our app snippets cannot be installed on a trial theme, our app will not work on a trial theme. Once you purchase the theme and can edit the theme files, we will be able to add the required snippets.