Same with me, I have paid out over £200 for a module and cannot get it working on my site, I have SSL I have a business account with Paypal and run on https but every time people try and use the card system their card is declined, even my own card is declined, the only support I got with a ticket is saying we have tried it and it works, pity it does not work with any of my customers..... bank holiday weekend and I am losing money thanks to Prestashop