I have tried without success to setup the paypal processing!! I get an error message in my error log that says that it is not completed. when I click on the paypal url in the admin panel I get this error: PAYPAL ERROR: INVALID answer from PayPal server. Possible hack attempt (Details: txn_id:'', invoice:'') Anybody have an idea of what I am doing wrong? Any help would be appreciated!
how should he fix this problem? and is paypal processing plugin included with the pro version?.... al
Who said it is error? Just don't open this page with your browser, it is absolutely redundant. Yes, Pro version has PayPal plugins for recurring(subscriptions) and not-recurring billing.