How to install Trados Studio 2021

I have purchased  the new Trados Sudio 2021 PLUS (upgrade from 2019)  but am unable to download it or install.  Now I need to work on projects and do not know what to do, please help me, in licences pages I see no option to get the wizard. and I am asked as installion ID which I do not have yet. Can you please help?

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