Stripe – Error. Does It Work behind A Proxy?

One of my test sites is behind a proxy… all websites work fine, including my own development site at http://www.ChildcareFinder.ie.

However, on the “select payment method” page I select STRIPE and click pay and publish… and I get the following URL and Error Message.

URL: http://childcarefinder.ie/wp-admin/admin-ajax.php?action=geodir_ajax_action&geodir_ajax=add_listing&ajax_action=paynow&listing_type=gd_place

Error:
Fatal error: Uncaught exception ‘Stripe_InvalidRequestError’ with message ‘You must supply either a card or a customer id’ in /home/s2u22/public_html/wp-content/plugins/geodir_stripe_payment_manager/lib/Stripe/ApiRequestor.php:152 Stack trace: #0 /home/s2u22/public_html/wp-content/plugins/geodir_stripe_payment_manager/lib/Stripe/ApiRequestor.php(212): Stripe_ApiRequestor->handleApiError(‘{? “error”: {?…’, 400, Array) #1 /home/s2u22/public_html/wp-content/plugins/geodir_stripe_payment_manager/lib/Stripe/ApiRequestor.php(114): Stripe_ApiRequestor->_interpretResponse(‘{? “error”: {?…’, 400) #2 /home/s2u22/public_html/wp-content/plugins/geodir_stripe_payment_manager/lib/Stripe/ApiResource.php(113): Stripe_ApiRequestor->request(‘post’, ‘/v1/charges’, Array) #3 /home/s2u22/public_html/wp-content/plugins/geodir_stripe_payment_manager/lib/Stripe/Charge.php(38): Stripe_ApiResource::_scopedCreate(‘Stripe_Charge’, Array, NULL) #4 /home/s2u22/public_html/wp-content/plugins/geodir_stripe_payment_manager/geodir_stripe_payment_man in /home/s2u22/public_html/wp-content/plugins/geodir_stripe_payment_manager/lib/Stripe/ApiRequestor.php on line 152

What could this be?

Thanks,

Adrian