Can't login migration message error

Hello,

I can't connect to the Minecraft Launcher It's giving me the following error message "We have not started migrating to Microsoft accounts yet. We'll let you know when your account can be migrated. Check out the FAQ"
I'm using an outlook e-mail. But never tried to migrate the account at all (I only migrated to a mojang account 4 years ago). The e-mail and password are working on minecraft.net but not on the launcher...

(the error message is in the attachement)

 

EDIT : After putting the password again, it let's me log-in to the launcher and looks completely normal (see the second attachement). But when I start the game, it only propose me to play the "demo" (attachement 3) ...

 

 

EDIT 2: Someone else made a post about this and apparently you can't do anything about this, I'm just goint to keep this up to see if someone that had this problem found a solution