I am getting this message on an iPhone 5S running iOS 9.3.3 with Firefox v5.0 (2) I have tried: -Logging out/in of my Firefox account -Rebooting the phone -Disabling Bookmark syncing from my desktop PC (Windows 10 Pro 64-bit), Syncing, and then Enabling Bookmark syncing, Syncing -Changing my password for my Firefox account and then resyncing from my desktop PC -Uninstalling and reinstalling Firefox for iOS It appears that all of my bookmarks are available on my iPhone but it is still showing me the "Sync is unavailable" warning when I view the app Options. I assume this is a bug with the lastest version and/or the new iOS version that I just upgraded to?