I've made a couple of small changes that I'm hoping will help increase forum activity 🙂
First, I've added a "Report a problem" button on the screen that's shown when a question is answered incorrectly:

Second, the "Forum" link, which links directly to a course's forum topic, was previously only shown on a course's overview page. The link is now also shown on the learn, review, settings, and edit pages:

I also fixed a bug where Chinese courses were crashing when one wasn't logged in 🙂