PayPal has posted notice of the following issue in their system which may affect card-based direct payments using PayPal Payments Pro. Affected sellers can work around the issue until it's resolved by temporarily reverting your checkouts to use PayPal Payments Standard, which would disable the Pay With Credit Card checkout button in your cart. To do this, go to E-junkie Seller Admin > Edit Profile, then under Accept Credit Cards select "My payment processor will charge cards for me", then click Submit to apply changes. Once PayPal resolves the issue, you'd simply go back into Edit Profile and reselect PayPal Payments Pro under the Accept Credit Cards section.
https://www.paypal-notify.com/eventnotification/event
details_popup?eventId=7417Live Site Status Update
Notification: We are experiencing a system issue which may be affecting DoAutorization and DoCapture API on the PayPal Live Site.
PayPal Merchants may be experiencing a high number of '10001 - Internal errors' for DoAutorization and DoCapture API.
Sent Aug 10, 2016 03:58 PM MST by ASH
Start time: Aug 10, 2016 01:00 PM 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-7417