I have other devices that aren’t mine connected

Breakdown-22 Said:

"I have other devices that aren’t mine connected: That is not my device the Mac"

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I Secure your Accounts:

When it comes to Accounts, you should modify the credentials every-so-often, for security purposes.

A. Verify Your Devices:

Verify that your the devices logged in to your account or officially yours, by using this link: Check your Apple ID Device List to See where you're Signed in - Apple Support

B. Consider Modifying your Credentials:

Having been stollen, someone likey has your credentials. So, by all means, consider modifying them, starting with a new password.

• Modify: your login credentials (Using Both a New eMail and a New Password for each and all sites)
• Associate: a different method of payment to your account
• Enable: Two-Factor Authentication for Apple ID and for all other accounts that have such an applicable option

II. A Glitch in Apple's Device Database?

I would contact Apple Support, asking them if there is a glitch in their user database. You should not be getting this message, if they have already been repaired. If these are used, then that may be why this is occurring.

Apple Contact Info:

• Contact Us - Choose Locations
• Proceed from there, as necessary
• Why the Wait: Phone calls are taking a bit to go through at the moment, due to lots of calls. With the Coronavirus Pandemic, many are at home at the moment, with much time on their hands to contact Apple. So, just stay on the line, and you will get through :)