Are you wondering if a non-US Cook-Key® be used on a US TM5?
Yes, a non-US Cook-Key® can be used with a US TM5. This setup allows users to access a non-US Cookidoo® account. However, Cook-Keys purchased in China cannot sync with US Cookidoo® accounts.
If you need further assistance, please contact us at https://service.thermomix.com/hc/en-us/requests/new. Our Customer Happiness agents will get back to you in 1-2 business days.