Offline Studio 2017 deactivation - license reset

Good afternoon! I have 2 freelance Studio 2017 licenses, but one of them appears as Activate in my account. By the way, I´m not using any of them at the moment. How can I deactive this one for installing in two different PCs? I have tried to deactive it yet, but the deactivation code that was generated was not valid. Is it possible to reset it, please? Thanks in advance! Luciane

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