Hello Boss457! Thank you for your post and welcome to the PayPal UK Community! I am sorry to hear that you are having difficulty adding your Visa card. This could be just a temporary issue. I recommend clearing cache and cookies from your internet browser and trying one more time. Please make sure to access your account on your home PC/desktop and via a trusted/secure internet connection. If you still keep getting the same error message, I advise reaching out to your card issuer. Your card issuer will be able to check that your card is ready to be used online. For more information, please check this https://goo.gl/hpQ2cw. Hope this helps.
