@juan-carlos-aguilar-marchena, I looked at your account and you don't have any computers associated with it. Maybe you deleted it.
If you close and re-open the agent it would prompt you again for your token, then it will re-create your computer in your account.
After that, please try running the commands using the web interface. You'll want to make sure that works before trying Alexa.
On your cell phone, are you trying to log in with email/password or are you trying to use the Pair code to log it in?
Please try linking the TRIGGERcmd Smart Home skill to your account using this page:
https://alexa.amazon.com/spa/index.html#skills/search/triggercmd smart home/?&ref-suffix=iss_gw