Urgent --> don't work "new coupon" in backend

Hi,
I just bought the Awo Coupon Pro product, the installation is successful but when I add a new coupon the screen goes completely blank? I have the latest update 1.3.0.

How can I fix it?

please pm or email me credentials to take a look

ok! I've already sent.

Thanks.

this is now fixed, as of version 1.3.1.