The training section is great, I love it, and IMHO the problems presented are harder than the ones at chess.com (which I'm paying for). The only problem that I've noticed so far is that some of the training problems end in a very strange way (e.g. opponent gives away his queen or rook for no reason whatsoever). It's not a big issue, but you should try to make it a bit more realistic.
Thanks for the feedback! I'm actually going through all of the tactics now and adding motif tags and explanations. Hopefully, this will make the solutions a bit more evident.
