If sign-in fails, check the email address, verification code, and connection. Wait for the countdown after a rate-limit warning. If seats or devices are full, open P-MIX device management and remove an old Mac.
“Version not registered” means that build is missing from the platform. “Version not licensed” means the wrong channel or release family is installed. Download the correct installer from P-MIX.
A valid license continues offline until its expiration or grace deadline. For more help, visit Contact.