How to Deactivate trados 2019?

I tried to update my Trados 2019 to 2022.

According to the guidance, first I have to deactivate my Trados2019。

I tried but it didn’t work.

The error message was “Revocation is either complete or revocation proof is already uploaded.

I tried to deactivate by offline, but it didn’t work too.

 Could you please tell me how to solve this? 

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