I too received the same comments from WES, although they accepted my Degree/Provisional certificate, but rejected Statement of Marks with the below reason
Reason: WES received your mark sheets, but they were not sent directly from your academic institution as required by WES.
My University say that they sent all documents in 1 single envelope. I'm wondering how can WES accept some and reject other documents. Any help/guidance in this regards will be highly appreciated.