Payment done on alipay but respond as declined on website

I was trying to purchase Total space 2 by using Alipay yesterday, and the transaction is done (please check for the attached slip), but the website tells me the transaction is declined. So please help me on the matter.

You are second person having problems with Alipay in last few days. We have to resolve this with FastSpring, please let’s continue over emails at I’m sorry for the inconvenience.