In the next week that is coming up, Diablo 3 users will only have a limited amount of games they will be allowed to launch in a small period of time. Blizzard have decided to take this action because of all the bots that have caused them no end of problems. Also the hacking has played a big part in Blizzard’s decision to take this course of action.
You can get in contact with Blizzard though if you are one of the genuine players and you will have to explain as to why you plan to create load of games up. You should receive a message by them saying that your input limit has been reached. That is when you will have to contact Blizzard directly and tell them the story.