disconnection

I am very upset with this game! Yesterday, I had just finished killing Merveil (which was very difficult, by the way) and was working on her spawn when I was kicked off the server. I had used a portal scroll and I lost that too. Not only that but I have a problem with logging on to the server almost every time. I usually have to go to my email to get a code to unlock the game. I am using the same computer every time so what is the problem? Can you stop this craziness and help me please?