How to solve the problem with facebook payment subscriptions?

I

IgaIst2013-12-18 14:18:16

Facebook

IgaIst, 2013-12-18 14:18:16

Please help me find a problem with Facebook payment subscriptions ( https://developers.facebook.com/docs/payments/subs... )
I do everything as per the manual, but in the end I get an unknown error:
"An error has occurred. Please , please try again later
API error code: API
error description: "
Subscription object:

<html>
    <head prefix="og: http://ogp.me/ns# fb: http://ogp.me/ns/fb# fbpayment: http://ogp.me/ns/fb/fbpayment#">        
         <meta property="og:title" content="Test" />
        <meta property="og:image" content="https://s-static.ak.fbcdn.net/images/devsite/attachment_blank.png" />
        <meta property="og:description" content="Description. Test" />
        <meta property="fbpayment:price" content="5.00 USD" /> 
        <meta property="fb:app_id" content="ххххххххххх" />
        <meta property="og:url" content="УРЛ_ПО_КОТОРОМУ_ДОСТУПЕН_ЭТОТ_ОБЪЕКТ" />
        <meta property="og:type" content="fbpayment:subscription" />
    </head>
</html>

The javascript function that pulls FB.ui:

var options = {    
            method: 'pay',
            action: 'create_subscription',
            product:  УРЛ_ПО_КОТОРОМУ_ДОСТУПЕН_ОБЪЕКТ_ПОДПИСКИ
        }; 
        FB.ui(options,function(d){
            console.log(d);
        });

As a result, I get the fb error that I described above and in the console: "null"
In the application settings, the "Payment Subscriptions Object" option is enabled.