The author of this plugin has indicated that they are not longer fielding questions and providing support for this plugin. The plugin is provided as-is.
You may still post a question, but any responses will come from members of the community, not the author of the plugin.
If it's any consolation, Peter (I believe) had mentioned that he may look at adding it back in for V6 as a simulated stock market. I believe he's completely re-doing the Monetary System and Monetary Shop for V6. If I recall, some things will be part of the core plugin and others will be like add-ons - which some may be free and others may need to be bought (with V6 introducing a Plugin Store and Theme Store).
However, given Peter's response, I doubt you'll see it added back in to the current iteration.