Currently there's isn't an automated way to see the progress of the bug. The way it works is that when the developers or the support team mark it as closed/fixed, they can reply back to the reporter saying something like "We've fixed it and it will be in our update next week" and you get these replies inside your app with our in-app conversations.

And yes, we've thought about gamification and rewarding users but didn't get a chance to experiment it. We had a few interesting discussions with some of our users and their main concerns was that they're already getting nearly 5x more feedback when using Instabug in their beta apps which is enough, and that it'll add an extra step in the process which is validating that the bug is actually a bug for the reporter to claim the reward. But I'm personally excited about it and I believe we're experiment it soon.