Complex sentence: On September 26,2013 the Korean servers of the game were shut down and on October 31,2013 the Hong Kong and Taiwan servers of the game were shut down, effectively ending Dragon Ball Online.
Split into simpler sentences: On September 26,2013 the Korean servers of the game have been shut down. On October 31,2013 the Hong Kong and Taiwan servers of the game were shut down, effectively ending Dragon Ball Online.