I think this came up somewhere else on the site. From what I remember, the 1K club is managed by the software . . . of the forum? or the store? I don’t remember which but if you’re writing checks, that may be the issue. That sale isn’t going through the system so it has no idea how much you’ve spent. Or something like that.
You can check Your buys from Noe’s webstore. There is list which molds You bought and when. You got email from Al when You reach 1000$ club and get code.