I've noticed that I have restricted plug ins updates to only 5 domains....

Hallo,
I’ve noticed that I have restricted plug ins updates to only 5 domains. I have GOLD account so shouldn’t I have possibility to have a update on 1000 domains? Could you please explain me that? Or even fix it.
My additional question is: I have GOLD account so it means that I can install those plug ins on my customer blogs, but can I resell them separately as a plug in?
Best Regards
Mariusz