Q: What's the Facebook link for?
A: Similar to linking your game to a Google+ or Game Center login, linking with a Facebook profile will back up your account information, protecting it from data loss from uninstalls and the like. In addition, being linked with a Facebook profile allows you to send invites to the game out to your Facebook friends. Finally, a HoDA game that's linked to Facebook can be played on both Android and iOS devices.
Q: How many games can I link to Facebook?
A: Like other types of links, you can only have one HoDA game linked to a given Facebook profile. If you try to link a HoDA game to a Facebook profile that already a game account linked to it, you will be shown a conflict screen (see below).
Q: Why am I being asked to choose between accounts when I try to link with Facebook?
A: What you're seeing is the conflict screen. You are shown this screen when you try to link a HoDA game to a Facebook profile that already has a game account linked to it. The screen will ask which account you want to keep. If you are unsure, back out of the conflict screen.
PLEASE NOTE: If you choose one of the accounts, the other account will be made no longer accessible on any device, despite any G+ or Game Center links it may have previously had. Be sure to choose the game account that you want to keep.
Q: What happens if I link the wrong account?
A: Submit a ticket to the Support and we'll look up our options to help. If you get a conflict screen that you don't expect, please back out of it to avoid losing access to either account.
Q: Can I play multiple accounts linked to different Facebook profiles?
A: The Facebook link feature isn't designed to support multiple different Facebook logins on the same device. Trying to use more than one Facebook-linked game account on your device will result in receiving the conflict screen and abandoning a game account as described above.
Q: Do I have to link with Facebook to protect my game data?
A: Linking a game with Facebook is entirely optional. If your game is already linked with a Google or Game Center login, then it is already protected from uninstalls, device loss, and the like. Linking a game with Facebook is the only way to play the same game on both an Android and an iOS device.
Q: After linking with Facebook, how do I access another account?
A: Once you link with a Facebook login, those Facebook credentials are the first thing that the game will look for when bringing up accounts. To access an account that's not linked with Facebook, first log out of Facebook through the in-game options menu and log out of Google+ or Game Center, if the account is also linked with them. Once you're logged out of them, you should be given a screen asking how you want to login: with Facebook, Game Center/Google+, or as a Guest.
If you're still automatically logged in to the Facebook-linked account after doing so, you'll need to log out of the Facebook app, Facebook Messenger app, and Facebook in any browsers and to log out of Facebook on the device level and try again.