oterrell21 wrote:
I cannot log in to my old mac book pro because I do not know the password. When asked to enter Apple ID credentials to reset my password it does not accept it. I know the information is correct because I just reset it on my mac book air, and I used the credentials to log into this so they are accurate. What should I do?
If you can't reset your Mac login password
If you still need help, please contact Apple Support.
or
schedule an in-person service appointment with an Apple Store or Apple Authorized Service Provider.
Bring your Mac to the appointment, and bring your original receipt or invoice as proof of purchase.
Change or reset the password of a macOS user account ...
https://support.apple.com/en-us/HT202860
If you encrypted your Mac’s boot disk with FileVault 2 —this prevents you from using your Apple ID to reset your password (since the password is used in FileVault’s encryption).
Read this Apple support document for more information about FileVault. see https://discussions.apple.com/thread/250256208