Hello,
My GOG privacy settings are set like the instructions pop-up, with the exception of the friend list which is set to "only me", which shouldn't be needed to view my wishlist or library. I've also set the drop-down box on the GOG wishlist to "Everyone". So everything should be good, according to the instructions.
Still, when I click on the GOG sync link on either Collection or Wishlist pages on GG.deals, I get an error banner and notification that my GOG wishlist/collection is private.
Please investigate.
Regards.