My check was lost during mailing, and they ask me about the promotion number, who can help me! Thanks.

Hmmm....

Here's one rebate: link

It looks like staples has removed their rebates from their website. I think this thread describes the deal?

Perhaps you can PM some of the people in that post who bought the software and ask them for the promotion numbers?

Good luck!

Yes, staples removed the link. But thank you very much.

Looking at the link URL itself, it looks like the promotion number might be 491748.
It might be worth a shot if that's the only information you needed to provide.