I opened the chest and it tells me "You obtain an Allagan Runestone - Rhalgr." But I obtained nothing and the chest disappears.... Then when I call a GM, I get a response of "You may have experienced a bug." in an automated response. This is unacceptable... I demand I get the item the game told me I "received". In fact, the only thing I obtained was anger at the useless GM service of this game.
