wordpress - Security header is not valid - WP E-commerce -
i using wp e-commerce (version 3.8.14.1) , wordpress (wordpress 3.9.1) following site:
https://www.westernblotservice.com/
payments set though paypal payments standard 2.0 , paypal pro 2.0. standard works flawlessly, there problem paypal pro. after item added cart , credit card information inserted, following error "security header not valid".
i triple checked information (api username, password, signature), made sure there aren't characters, deleted , issued new api username, password, signature, nothing seems help. sandbox mode isn't checked in wp e-commerce. pretty sure using live api information paypal account (from profile/selling tools). called paypal , verified set correctly. told me it's error on plug-in's side.
i created test product $0.01, can added cart here:
https://www.westernblotservice.com/test-2/
clicking order should take shopping cart page erorr occurs.
any appreciated!
this error indicates in cases api credentials invalid. double check them , if convinced correct, check endpoint. live credentials not work in test environment , sandbox credentials not work in live.
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