I am using Rails 3.2.13 and I need to integrate with a payment gateway (preferably Paypal).
I saw railscasts Ryan using ActiveMerchant, but I can not get it to work (I am in Greece), the error says that the seller is not available in my country.
I cannot get the credentials of the API for Greece as shown

Is there a way (activemerchant or not) so that I can integrate the Ruby on Rails application with Paypal from Greece to accept payments?
thank
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