Once you have read all of the area conversations that you can currently read, they will no longer be marked as "New!" on the map.
In that case, you will not receive any crystals even if you read the conversations.
If they continue to be marked as "New!" even after they are read or if you cannot receive crystals, please close the app and try again.
Once you have restarted the app, please check the number of crystals you own to see whether or not it has increased.
Upon experiencing an error, please be careful to not delete the app without having transferred your data.