I've been dealing with that exact same issue.

First I created a new tron wallet, but that lead nowhere. Then I went for a dedicated tron account off-site and realized the apparent need for a transaction, in order to validate that account. So I started juggling crypto currencies and settled for converting some STEEM into TRX, while having troubles finding an exchange that was trading both. Then I wondered how I was supposed to withdraw STEEM in the first place, which was another unexplained mystery (for the time being).

Long story short: I managed to link up accounts and felt cautiously optimistic. My steemit wallet was actually displaying some of that sweet sweet tron, making me feel positively ready for a TRX bonus. Then I waited, and waited, and waited. Nothing. Consequently I started crunching numbers and cross referenced the content of my wallet with the current exchange rates. To my surprise either my steemit account was overvalued or I was missing something else. That must've been the lost TRX, I thought. Nope. That's when I shrugged and just gave up, a couple of days ago.

I don't think I'm especially stupid, yet here I am. Graciously assuming average intelligence for a second, I don't think this will pan out. Maybe steemit is going for the top 1% of the bell curve, but I doubt this is a viable business strategy. Doesn't exactly help to then learn that the TRX bonus was just an optical illusion either.