i find PayPal Express Checkout is use iframe but Safari no support cross origin. if client not disable cross origin restrictions , will be show a lot of error .
error like that :
Blocked a frame with origin "https://www.paypal.com" from accessing a frame with origin "https://mysite.com". Protocols, domains, and ports must match.
any guy know to fix this?
My English is not good, please forgive me