PayPal has posted notice of the following issue which may affect sellers using PayPal Payments Pro; this impacts both card-based Direct Payment as well as PayPal account-based Express Checkout. Until PayPal resolves the issue, affected sellers may wish to temporarily revert to using PayPal Payments Standard, which is not affected. To do this, simply sign into E-junkie Seller Admin and click Edit Profile, then under the Accept Credit Cards section select "My payment processor will charge cards for me", then click Submit to apply the change.
https://www.paypal-notify.com/eventnotification/event
details_popup?eventId=7463Live Site Status Update
Notification: We are experiencing an issue which is affecting PayPal Payments Pro and Express Checkout on the PayPal Live Site.
Some PayPal Merchants may be experiencing a high number of 10001 Error for DoExpressCheckoutPayment and DoDirectPayment API calls
Our technical teams have been engaged and are actively troubleshooting the issue.
Sent Sep 1, 2016 12:51 PM MST by ASH
Start time: Sep 1, 2016 04:00 AM MST
At this time, there is no alternative work-around.
Questions? Please contact PayPal Merchant Technical Services by filing a ticket; refer to PP-LIVE-7463