Because you are supposed to migrate your account
And like it or not, it is better in any way, saves time and trouble, makes it easier to change between accounts, it's easier to change channels, allows for multiclients, it's simple to use, and overall it's a better experience
All the problems and the complains are related to one thing only, and that's account sharing, that even beeing forbidden, you guys persist on doing it.
It's a new launcher, with a easier and simpler way to log your accounts, nobody is trapped on anything, except basically a new screen before you start your client.
Since last update I cannot start the game, I get all the time the same message even I reinstalled the system. Can anyone help me pls? Thank you!