Thanks for the feedback.
We already did the user testing with 3 people. It was painful to watch, sigh. But that was two iterations away and we learned a lot since. Or so we thought.
Were you expecting to actually draw something while being on the site? This seems to be a common gotcha and thing we don't explain well yet.
Maybe we should make it clear that tzigla is not actually an editor. Or maybe we should just plug one in.