Very simple: I try to synchronize my bookmarks with a free owndrive account (which is, of course, an owncloud server), and nothing happens in marble. No error is reported, but nothing is uploaded to the server. I use the url https://my.owndrive.com, and my (confirmed) credentials.
I am doing bug triaging as Google Code-In 2014 student. I confirm, it doesn't work for me either. I still must admit that owncloud implementation in marble is really unstable, so I am not surprised.
Confirmed by second user.
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