In the event you have problems with the application or with particular TBX(s), formal tech support is offered via email at info@eastgate.com.
Bear in mind that the online forums are user-to-user (i.e. not formal Eastgate support), so people helping there are fellow users who do not have access to the internals of the app. They can however be a useful source of advice on the how and why of using Tinderbox and specific techniques.