Syncing across devices NFS:No Limits

In Firemonkey's support page for the game, they state:

If you login to a social network you can play your save game across multiple devices. Note that you cannot play the same game on two devices at the same time.

The thing is that I can't find a way to log into "a social network" on either Andoid or iOS. Under Data Management I only have options to upload data, download data, and reset data.