Password in notes

You must have set up a password at some point.

You can reset the password.. if you already have other locked notes though, you still won't be able to access those without the original password they were locked with

see the section Change your Notes Password in the link below

How to lock notes on your iPhone, iPad, and iPod touch - Apple Support

karrruch Said:

"Password in notes: I want to put protection on the notes.But I can't put a password.I enter it, and he writes to me that the password is not correct, although I haven't set it yet"

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Getting the Correct Password:

Meet "him" in-person, and have the person enter this password. Important: Have someone else there with you, for safety concerns, and meet in a public place (i.e. coffee shop).