Sorry but it seems impossible to get answers and I not going to pay unless I know things can be fixed:
Main issues are:
1. Not compatible with JetPack - causes multiple instances of forum to appear
2. Causes custom permalinks to break (404 not found) when using custom post types (OK with default WP Links)
3. Formatting removed when user edits own post (formatting tags appear in edited post rather than doing their stuff behind the scenes)
A bunch of other minor niggles.