Mayin -- if the Energy Glyph is still available through a quest, then it is indeed possible that you have to complete one of those quests you have to guess one and only one exact magic sentence, where non-native english speakers are even more handicapped than every non-developer/gamemaster. It is very similar to the Falka Oil quest: Its recognition changed, the sentence I found in my logs did not work anymore, I had to guess a new magic sentence.
Previously, the Energy Glyph was given as a mistake, this specific quest has been fixed and now gives the correct reward. Until today I never met anyone who would tell me where to get it now.