WoWBEEZ isoften having problems with their server , so i think it could be that...
Chat with our AI personalities
Go to minecraft.net and download the official game launcher. It does require a paid account.
You can download it on websites that gives you to free download it. If you need to pay, that's the full version.
Download the launcher at minecraft.net/download to play Minecraft.
Steam is the launcher too.
It means that you need to login on minecraft.net and download new launcher.