вот Пейпол прислали ответ, I have reviewed your PayPal account and it shows that the reason you are having problems is because unfortunately your payment attempts of $90.00 USD have been stopped by our internal security system. We employ complex statistical models to identify patterns of behaviour. This is similar to the way banks and credit card companies identify patterns of behaviour that are out of the ordinary when approving individual transactions. When our system does not allow a certain funding source for a transaction, it means that there may be a higher-than-normal level of risk associated with the transaction. This may include but is not limited to a transaction being challenged to be unauthorised. Please be assured that this is a standard procedure for all transactions going through PayPal and it's carried out in accordance with our User Agreement