Unable to deactivate Trados 2015 licence offline

Dear all,

I had Trados 2015 installed on my notebook and accidentally have uninstalled it, because installed another licence of Trados Studio 2022.

Now, I wanted to reinstall Trados 2015 on my notebook, got the deactivation code in my RWS account, which I copied, but got an error message, that it did not work out.

How can I activate my old Trados 2015 version on my notebook?

Thank you in advance for your help.

Kind regards,

Milada

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