I accidentally deactivated my Trados 2021 before I even activated it. What do I do if I am now said to be unlicensed? How do I activate the license?

Please, 

I accidentally deactivated my Trados 2021 before I even activated it. What do I do if I am now said to be unlicensed? How do I activate the license?
Because now appears: License Expired.
...and I need to work urgently. 
Could you help me please...
Many thanks - Agueda Galvão