Trados 2019 to 2021 : how can I get an activation code for 2021?

Hi,

I am a single-user of Trados 2019 with a Professionnal license in my company.

I have installed Trados 2021 on mu PC and the software requires an activation code.

Can you please indicate whether I can switch from 2019 to 2021 with such a code only?

If not, can you please advise about the procedure so to start working with Trados 2021?

Thanks for your feedback.