I'm trying to collect payments on my site using Paypal Checkout Smart Buttons. As per the user flow mentioned in the documentation, when a user clicks on Paypal smart buttons, the checkout process starts inside a modal window but for me the checkout is started in a new tab instead of a modal window. But for one of my colleague, it's appearing in a modal window so does Paypal changes the flow based on user's location or something or I need to pass an additional parameter to make sure the process occurs inside a modal and not in a new tab?
