We have been using M2E Pro extension for magento for over 9 months perfectly fine. However about 24 hours ago we started to get this error when we tried to synchronize orders
"Internal server error(s) [It seems there are some problems with Amazon synchronization in your M2E Pro. So it might have negative effect on the synchronization process. We strongly recommend to contact M2E Pro support using contact form (Amazon->Help->Support)]"
We already contacted our webhost and they said there are no restrictions on our webserver, and we contacted amazon and were told the Amazon API is working just fine. So we need someone to diagnose this issue and resolve it.
We are looking for someone that not only has extensive experience in magento but a background in Amazon API web services.