About the meanings of "First Purchase" in the 30% Extra Gold AD

I bought two steam DLCs several months ago.Will I get 30% extra gold if I buy some gold right now?

You should get it if you buy it from the store while the promotion is still going on. I don’t really know why having two DLC’s would interfere with the purchase of gold standards.

Thanks a lot, bro. I do get +30% extra gold.