Studio 2021 does not open anymore

Hi

I wanted to use SDL Studio 2021 this morning and I am not even able to open it

I deinstalled it, reinstalled it with SR2 package and do still have the same issue

Even worse, I do have groupshare cloud and have an dedicated support with it I am not able to access anymore as if I had none.

I am not able to access anything anymore and am prevented from working 

Any help to reinstall everything?

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