How to solve this problem

gemarne wrote:

https://discussions.apple.com/content/attachment/29c917c8-5d10-4f1f-9e57-f156fd7f740d

re: Sign out of Find My

Enter the password for the Apple Account

to turn off Find My on this

Mac.

Password:

Try a different password...?

if this is Admin password—

If you forgot your Mac login password

https://support.apple.com/en-us/HT202860

Reset your Mac login password - Apple Support

Mac User Guide - Apple Support

If you can't reset your Mac login password

https://support.apple.com/en-us/HT212190

AppleID/Account is different— you needed a AppleID to sign into these communities...

Check your Apple ID device list to see where you're signed in

Check your Apple Account device list to find where you’re signed in - Apple Support

You can try from https://www.icloud.com/ and compare your results

ref: Remove a device from Find My on Mac

ref:

Turn off Find My on your devices and items