cannot find mi license 2017 on the website

Hello,

I ned to deactivate mi license because i will chance mi hard disk.

I currently use Trados 2017 and just bought the license upgrade to Studio 2021 (non installed jet).
I wanted to deactivate the license of Studio 2017 but I can't get it in the list on the SDL website. 

And can not deactivate Studio 2021 either because I haven't installed it yet.

What can ido?


Thanks in advance,


Brigida Perez