I can't register my Draftsight Free

I'm loving using Draftsight. Unfortunately I'm limited to the free version because I use a Mac and there isn't a Pro version for Mac.

Anyhow, my 30 days are all but up so I decided to register my free version. I filled in the form that is presented at the beginning when you open the app, and nothing happens when I submit it. I have tried it a couple of times and still haven't received my validation email yet.