The same test worked fine on the Explorer Browser.
I turned off test mode and turned on paypal sandbox
On Explorer I get an http 500 Internal Server Error.
Paypal shows NO transaction.
for the field $WAGLOBAL_Paypal_User - should the value entered be the username received when the API Signaturel was credentialed or the username used to access Paypal account?
for the field $WAGLOBAL_PayPal_Password - should the value entered be the password received when the API Signaturel was credentialed or the password used to access Paypal account?