Licence suddenly deactivated

Hello, 

When I started my computer today, Trados showed a message warning that my licence was deactivated. 
I do not understand why !

And then, it is impossible to reactivate a licence. I tried to deactivate my licence online but got an error message.

I also tried to reset them.

Nothing works then my software is not useful.

What can I do and how could you please help me??
Many thanks, 
Céline

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