The show has never gotten a DVD release, most likely due to its near-universal hatred. If you want to see the series at all, YouTube and KimCartoon are your best options.
Season 2 is a worse example. The second season was Netflix-exclusive, so when the entire show got taken down from Nexflix, the second season went down completely... until in April 2015, a Dailymotion user named LifesWhatYOUMakeIt uploaded the entire second season on said website. (Though the last two episodes have been removed for some reason, making them officially lost.)