The Media Library Folder Pro 3 duplicates the folder structure that SS creates inside the wp-content. This so far the only off-loader plugin I’ve found that will deal with the complexity of the SS media folders. The problem is that the new URL-rewrites seem invisible to SS, in other words when a customer buys a pictures SS does not know how to look for it in the Digital Ocean bucket.
So far nobody has been able to help, not even the people over at Max Gallery Media Library Folder Pro 3 and Symbiostock developers are nowhere to be found or of any assistance.