Just to say for those that stumble across this post on the forum that the Tinderbox community has been quite active recently. There is ongoing helpful activity in the forum (at http://forum.eastgate.com), there are weekly meetups on Saturdays via Zoom where you can seek advice (also linked in the forum), and there is an amazing series of (by now some 40) videos by Michael Becker on his YouTube channel (https://youtube.com/channel/UCpnj2U37aI108YoO1L8leYw).
So if you’re curious about Tinderbox, these places may well be worth checking out. I find it an intriguing and amazingly useful piece of software, which is very powerful but takes some engagement to reveal its power.