Stuck on the monjang studios screen

When I open minecraft, it immediately show the monjang studios screen (when it charging the game). It didn't change after a few months ago, I open minecraft and left it open and wait for see if something change of bhy chance it open but it never do. So I want to know how I can fix it, because I have a world in my account that I can't lose it. I'm so advanced in it and I don't want to restart at all... So please help me.