always happen problem “Sorry, we weren’t able to complete your payment at this time.

Description

Dear PayPal, I would like to send money to my Italy friend by my credit card. But I always happen problem “Sorry, we weren’t able to complete your payment at this time. Please try again later. If you continue to encounter problems, please contact customer service.” I check your help center. Although I am in China, Amex told me that my card is OK. Please help me check it carefully and timely. Thank you. Have a nice day and best regards!