Oh, so there are more people having problems with this. I thought I was the only one, tried to contact an administrator but I didn't get an answer. I was hyped to try the beta version, but now I just gave up because my account wasn't working. I continue to play Minecraft with my friends on a private server which I made with the help of
minecraft hosting, it's so fun to compete with them and play together. That's happening when your other accounts aren't working - you just find another to alternative to have some fun.