Where'd you download the game? Redownload it from itch
I've literally just figured out how to fix it. Play until you get to when the instructor asks for your name, then start a new game and press skip. It's gonna skip "past" the instructor asking your name, and allow you to input your name. Hope this helps!
Edit: I find the instructor's dialogue getting stuck a lot, going to main menu, reloading your save and then skipping will allow you to continue.