Hi josue jonathan rivero herrera,
This might seem like stating the obvious, but what you have to do is "Contact Cisco to supply response token for VM Activation challenge"
In other words, you need to find a friendly account manager/tech within Cisco who knows how to generate keys from an internal Cisco website, and they may even need permission from their manager to do that. It is not such a simple task, Cisco are keeping close control over who has access to the simulator.
I hope this helps
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