after installing studio 2021, the activation code does not work. How can i solve it?

after installing studio 2021, the activation code does not work. How can i solve it?

Hello Na Yu
Please try to reset the license from your RWS account as described in this article and then reactivate it: https://gateway.rws.com/csm?id=kb_article_view&sysparm_article=KB0038545
Thank you,
Sorin