In the past people have posted similar questions. Supports answer is email them the serial number and proof of purchase and they will correct the ownership. Now if your mac dealer is selling the tool you may want to email autel with your serial number and authorize them to allow the tool to be re-registered at a later date but not by your mac dealer because he has to resell it. Depending on what level of software you have it may be more valuable without updating. Older system and software seems to work better. Any way its up to autel to sort it out.

Since the tool has been registered, it can't be re-registed again. But you can send us the serial No. and new Autel ID, our support can transfer it to the new owner. Please email to support@autel.com.