i want to buy an extensions and i choose to pay with paypal. but i get this error
DoExpressCheckoutPayment failed: Array ( [TIMESTAMP] => 2015-01-27T07:50:58Z [CORRELATIONID] => 358c417136b6c [ACK] => Failure [VERSION] => 117.0 [BUILD] => 15009693 [L_ERRORCODE0] => 10486 [L_SHORTMESSAGE0] => This transaction couldn't be completed. [L_LONGMESSAGE0] => This transaction couldn't be completed. Please redirect your customer to PayPal. [L_SEVERITYCODE0] => Error )