will not redirect to google checkout

I downloaded ClassiPress Google Wallet Gateway but when the user goes through to post the an ad and selects google checkout to pay for the featured post option, they are not redirected to google.
On step three they are just told to check status of their post in dashboard.

How do i make it redirect users automatically to google to pay?

thanks

https://www.ads-software.com/extend/plugins/classipress-google-checkout-gateway/