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extravi mi celular, esta dada de alta aplicacion para ubicar mi equipo en MX DESDE MI computadora de escritorio.
I lost my cell phone, this application is registered to locate my computer in MX FROM MY desktop computer.
GT
Hi @adrianasotelo;
First of all please post your subject in English as this is an English based forum and for everybody can help you.
Regarding your device you can try locate it with Find my Device from Google, read here: https://support.sonymobile.com/global-en/xperiaxz2/userguide/finding-a-lost-device-using-find-my-dev...
Hi @adrianasotelo, sorry to hear about what has happened. 
As @NunoSEN2 mentioned, try using the Find my Device service instead as the MyXperia service has been discontinued and is now directing you to Find my Device instead.
You should also get in touch with the Police in case the device was stolen and also your operator, so they can block it from being used with SIM card(s).
Keep us posted and best of luck with finding your device!