Mass Effect "Bring Down The Sky" DLC

Hello, I have the Steam Version of Mass Effect 1. I would like to play the "Bring Down The Sky" DLC. Could you please give me a CD Key for this?

I receive a “You have reached the activation limit.” message, if I use the key from this site.

https://help.ea.com/article/mass-effect-bring-down-the-sky-dlc-redemption