I can't turn off the meeting password.

Hi @shemira welcome to the community! Can you please share what exact settings you've enabled/disabled from https://zoom.us/profile/setting 

You have the following passcode options of enabling/disabling which maybe affecting your inability to turn off meeting passcode when scheduling a meeting (PMI/Random Generated MeetingID) or starting an instant meeting.

• Require that all meetings are secured with one security option
• Require a passcode when scheduling new meetings
• Require a passcode for instant meetings
• Require a passcode for Personal Meeting ID (PMI)

I am having this same problem, I am the owner and the admin and under Profile Meeting Settings it says "locked by admin" next to the toggle for Meeting Passcodes.