Coupon not displaying

Hi there, I have installed the component over at my test site

When I put the coupon code in at checkout I get:
'Coupon code not found. Please try again.
If you have a coupon code, please enter it below:'

Can you help?
Thank you,

Hello,

I received your email with access. This is a virtuemart 1 site with AwoCoupno free. And when you set up the coupon you set the total usage to 10 per customer. In doing the customer is required to log in before entering the coupon code. I removed the restriction temporarily and it worked fine.

Thanks for the reply, I have just tried it again and it seems to be doing the same thing, what am I doing wrong?
Thanks for the help so far :)

You would either need to be logged in on the front end or remove the restriction x number of uses per customer.