Troubleshooting guide
How to fix the problem
In System Settings, select your Apple Account > iCloud and search for Find My Mac, if necessary via Show All. Enable the feature and allow location usage. Privacy & Security > Location Services check the required permission. Service availability and Activation Lock support depends on model and organization management.
If the problem persists
Verify that you are signed in to the correct Apple Account and that Location Services is enabled in Find My. If the device is managed by an organization, this feature may be limited; Please fix the pairing according to Apple's instruction before selling.
Request a repair