Why and how should I connect the game to Facebook or Viber?
You need to connect to Facebook or Viber (if you downloaded the game from Viber app) in order to be in touch with your friends who also play KoT: be in the same guild, help each other retrieve stolen gems and test each other’s dungeons. In Viber, you can also invite friends who don’t yet play KoT to join you. To connect the game to Facebook or Viber, go to Options and tap "Connect" near the respective option. Please note, that Facebook or Viber connection DOES NOT save your progress, your progress is saved in the Cloud.