License upgrade from 2017 to 2021 - no activation code

I completed an order for an upgrade from SDL Trados Studio 2017 Freelance to SDL Trados Studio 2021 Freelance in January and have been using Studio 2021 in trial mode until now. Now I need to activate my license but I do not have a code. The license activation code does not appear in the license section of my account, and I cannot find any reference to it anywhere, it still only has my old 2017 license listed. I need to activate my license immediately as my trial of the 2021 product has expired and I have a job to complete in Studio.

Please help!