Kids shows On Demand

There used to be 4 episodes of most kid's shows available On Demand. At 20 minutes per episode, this was not a lot of content and the episodes changed very infrequently. Last week, there was suddenly only 2 episodes available. Today, there was only one. My daughter watches a lot of the Nick Jr. shows - Dora, Team Umizoomi, etc. What is going on?