Board Thread:Dragon City Questions and Answers/@comment-9341618-20130510000254

I am a Lvl 24 player, I have 3 Lvl 15 Dragons. I purchased The Center at Lvl 20 and have been unable to use it. I believed there might be a gliche in the program, so I sold that one, and purchased a new Center at Lvl 23. The new one is no different than the old... when I tap on it I get a message "The gates to this center will open soon." Have been getting this msg now for a week. What needs to happen before this Training Center will "Train" my Dragons ?? Anyone ?? 