krisdeckers Posted February 8, 2016 Share Posted February 8, 2016 Trying to buy on my webshop with my spouses Visa, I get in return "following error: Security header is not valid". Is this message from Cubecart or directly from PayPal? Quote Link to comment Share on other sites More sharing options...
Al Brookbanks Posted February 8, 2016 Share Posted February 8, 2016 PayPal.. it means the values you have entered in the module configuration are wrong. Quote Link to comment Share on other sites More sharing options...
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