I have tried several times to reset or deactivate SDL Trados 2017 on my old computer but always shows first "An error occurred". Now nothing happens anymore.

I have tried several times to reset or deactivate SDL Trados 2017 on my old computer but always shows first "An error occurred". Now nothing happens anymore.
Monika Weiler-Helbach We will be pleased to help you with this problem so have logged a support case on your behalf. We do prioritise customers who have a support contract so please keep in mind it could take up to 48 hours, especially over a weekend, but rest assured we will contact you as soon as we can. You will be contacted at the email address used for this Community. Support Case Id : 00711588 .