I don't use it anymore, I used it for the first 4 to 6 months of studying mandarin. I definitely agree, and I do believe it is not maintained anymore, it was like that even when I first found it almost a year and a half ago. Although it's a bit glitchy, if you can ignore that enough to get a good feel for the radicals, it's worth the effort. I would just go through the sound test, the meaning test, and then when they trace the character on the screen I would copy it down into my notebook, then move on to the next one.
Are you using skritter? I never used that before but I think that would work a lot better from the looks of it (although it's much more expensive). Maybe try to upload a deck of the radicals into skritter may work in the same way? Not sure how skritter works exactly but I think you can upload your own decks for practice?
Heisig may work for you but I just really hate the fact they separate the pronunciation into a whole another book, if that doesn't sound like a slick marketing tactic then I don't know what does. And the fact every blogger recommends this book also makes me wonder. I looked at it while in Kinokiniya once, and was not that impressed (for the price of the 2 books). If you already understand how mnemonics work then you can do it on your own. If you can get it for half the price or less, maybe it's worth it.