The message is a from CNC Software (Mastercam’s developer). Cracked versions often trigger this, and while some try to bypass it, doing so is:
In modern CAM, the cost of a scrapped part, a crashed spindle, or a copyright lawsuit far exceeds the price of a genuine license. Do not waste hours trying to bypass this verification. Use the troubleshooting steps above to confirm your status, and if you are not genuine, take the professional step of becoming verified. this copy of mastercam is not genuine verified