Hi,
We're trying to add the PayEx payment provider to our store. We're using this plugin: https://www.nopcommerce.com/p/839/payex-payment-module-for-with-autopay-direct-debit-debit-card-credit-card.aspx
We have an active (test-) account with PayEx. After choosing PayEx as a payment method during checkout we receive this error: "PayEx Initialize failed: Admin.ValidateMerchantLogon:Invalid hash [ ValidationError_HashNotValid ]"
It seems we can't authenticate agains PayEx servers, or? Has anyone else experienced this kind of error?
Our store is a plain nop 3.70 ...