What bothers me is how they've actually encrypted their datastore in Mendeley so their own customers can't actually get at the data they paid for:
https://getpolarized.io/2019/01/23/mendeleys-encrypted-repos...
https://getpolarized.io/2019/01/23/mendeleys-encrypted-repos...
Now Endnote on the other hand... if I could just get collaborators to switch away from Endnote...
Still searching for a better solution for annotations + referencing. I use zotero and the highlights app at the moment.