Hi Ali,
Thanks for the response, the redirect back to the checkout was because i set it up to use the lightbox, the payment page returns the invalid request error both on the version 48 & 49.
I just tried your suggestion to use the 55 (used the lightbox and payment page) and it returned another error: “Payment error: Please contact customer support quoting the support code.” (no error code was displayed though). The bankers confirmed the merchant account as US dollar ($).
Would deeply appreciate any further assistance.