Cubase 10 in audio editor missing left zone

Hi! I am trying to edit my audio files in event editor on my Cubase 10 but the left zone of all my projects have disappeared in the event editor . Any solution?
Thanks in advance!
Use Windows 11

Without knowing what you are seeing that might be difficult. Perhaps a screenshot would be helpful?

That’s it. All of my projects all of a sudden lost their left zone in audio event editor

Is it available for selection if you click on the Gear icon in the upper right corner? I don’t have Cubase 10 available so not quite sure exactly how things looked then.

no, it isn’t

I want to start vari audio… and I can’t…

What’s odd is that the buttons are missing. You might try launching Cubase with your Preferences disabled and see if that helps.