It is really easy for me to connect my Paypal account & it has its own API which I am using while integrating few other payment gateways like Stripe (which they support as well).
So far not much issues are found but if you have any then let us know through our customer care team so we will try out your suggestions! We integrated paypal payments gateway alongwith stripe integration within WooCommerce store where users can purchase products from various ecommerce websites such as Amazon/Ebay etc by paying via PayPal or credit card directly. This increases overall sales revenue without increasing marketing cost since this service charge only when user actually makes purchases at specific website / online shop whereas rest all work done automatically after successful completion of transaction. Thanks to EasePay's technical expertise who assisted during whole process till final product launch - Excellent.