Is This a Scam?!?!

How come I brought the full program but it gave me the portable TRIAL zipfile. how do I get my full program that I rightfully bought with money?

In case that you didn’t receive the link to download the files after the purchase, please contact us at support@aseprite.org

From the information I have, it looks like you already was able to get the Steam key, so I suppose that you got access to the full version. Anyway I’ll send you the link to download the full version files.