How can I make it so that the mix window is using the full screen? I already tried narrow mix.

PT 2024.10.2 Artist Version, Windows 11

I mis-clicked in Setup>Playback Engine to an option that apparently is not friendly with ProTools..... it saved/closed the session, but now the program gives this error (see photo) when I open it, and closes no matter which button I press... so I can't get back into the Setup menu to reverse whatever I clicked.

Is there a way to override whatever I did without uninstall/reinstall? FWIW, I went into the Windows control panel in case that's what this window was asking me to do. Nothing about buffer sizes, but left the sound settings the way they were back when ProTools was not acting like this.

Have tried:
-restarting PC
-clicking the X, More Info, and OK; the whole program closes, can't get back to Setup menu
-Looking through Windows Control Panel to see if I can find anything about buffer sizes... no luck

Thank you!