I had the exact same thing happen to me before. If your parents disapprove of Youtube, they most likely blocked it without you knowing. Kidztube takes links of appropriate videos from Youtube and uploads them to their website. While common, Youtube is still being accessed on Kidztube, except it's showing kid-appropriate videos. Unless your parents unblock Youtube or trust you enough to stay off of Youtube, then you can access Kidztube videos. It doesn't make much sense, but unless Kidztube converted all the videos to a different file and then uploaded them, you can't watch videos. Sorry if this wasn't the answer you wanted. Trust me, I really wanted to watch Kidztube too, but the videos are weird.