I followed all the instructions here: http://wcdocs.woothemes.com/user-guide/extensions/paypal-payments-advanced/#
When attemting to pay with PayPal using this plugin I am directed to a blank white screen. After talking with 6 different people at PayPal over a 4 hour period, I finally found a PayPal employee who was familiar with the plugin and had spent 3 days trying to solve this same problem with another client. His team finally determined there is something wrong with the plugin that I should ask for a refund from Woocommerce. I can do that.... but I'd would rather make it work. However that is probably means we need help from the plugin developer (Limecuda) or Woocommerce.
I am putting this message out there for all to see in hopes that someone either knows how to fix this or it catches the attention of the developers.
I talked to Eddie at PayPal Integration 1-888-210-4901