I can't deactivate my license on-line nor off-line

Hello,

I bought a new PC and wish to migrate my Trados Studio 2019 Freelance Edition to the new PC.
Unfortunately, I can't deactivate the license on my old PC, I tried on-line and off-line.

I also tried to reset my license, but it won't work either.

What to do ???

Thank you for any help you might be able to provide,
Marc

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