the app only supports core features of Moodle. We created a remote addon feature to support 3rd party plugins. The plugin maintainers should be the ones to create this remote addon and include it in the plugin.
However, please notice that the app doesn't support blocks. If the plugin you're mentioning is a block, it will be quite hard to make it work using a remote addon. We're still studying how can we support blocks in the app, so we won't support them in the short term.