Like them on facebook and then fill in the form to request yours.
This on seems go fast but they have been refreshing it daily over the last few days.
Disclaimer: This is not a paid or sponsored post. I like to share offers/samples that I sign up for myself. I always check them out first and only post offers/samples that are legit or appear to be legit to the best of my ability. I cannot guarantee them as they do not come from me. Sign up at your own responsibility.