Teen Titans S4-5

Where are the other seasons of Teen Titans? Will they be coming later or is a rights issue. Not sure why only 3/5 if episodes are up.

Shows that DC Universe has Seasons 1-3… BUT, Seasons 2 and 3 seem to have the wrong episodes. They have Season 2 with Season 3 episodes, and Season 3 is Season 5 episodes.