Well maybe it's some setting or something you have to do, to show the files in downloads.
Also same problem with all the others bought. And ones claimed recently.
Here's the Black Flag download page. That I claimed last month, btw thanks. I was wanting to try them out. But every download page says, Nothing is available for download yet. All 8 games.
It might have something to do with you having it for a dollar, but then it says $1.23 under that. So maybe some restriction in the settings you need to change in them all. Since I can't even download the ones I claimed last month.