How I can activate the product? I have a license of trados 2019 and the product worked well, but how to activate trados 2021?

How I can activate the product? I have a license of trados 2019 and the product worked well, but how to activate trados 2021?
Chiara Trezza We will be pleased to help you with this problem so have logged a support case on your behalf. You will be contacted at the email address used for this Community. Support Case Id : 00657493 .