I'm not sure about that, but it certainly means that you can use that code anyway.
So that's good.
I'm not sure if you're actually tied to pokerstrategy or not though. Pretty sure you have to use the marketing code for that.
One thing you can do is play, wait for a couple of days and see if any of your points start showing up. They actually take two days or so to show up here. I only play on Stars, and have never had my points for one day show up the next. They always take at least two days.
To be safe, I would send stars a message, and just verify with them, if your account is tied to pokerstrategy. Let them know you intended to use that marketing code, you're not sure now if you did or not and just ask them if all is well.
The sooner you do it the better. Stars support is great, but the longer you have an account, the harder it would be to get it re-tracked. Some sites won't do it at all, if you didn't sign up properly.
Stars support is good though, so I'd just check with 'em.