Account Migration has not begun. There will be an in game message when it's your turn to move. Do not fall for any third party websites that are telling you to migrate NOW. They're trying to steal your information.

my minecraft deleted its self and idk y. everytime i open java edition it just opens then closes. it worked before. im on a Chromebook. it worked on Thursday the 14th up to the 18th but i did not use it on Saturday