Smart lock in Mexico

I'm not absolutely sure of this, but I believe SS only operates in the US and the UK - your system will work as a LOCAL alarm system (meaning, inside your home only, you can set your sensors to alarm if triggered), but you won't have monitoring, no alerts if you're away and a sensor is triggered, no phone app, no police dispatch.

If you bought it at Best Buy, look at your receipt, if in the time frame for returns, you can return it to Best Buy.

Forward this to your marketing department SS.  If the smart lock could be used as a stand alone item it would get a lot of potential customers to start off with just a lock, and discover later that they want more of a system like the OP.  

As far as it working in Mexico IDK, I would call them.  In theory it should work as a self monitoring system as long as you have wifi and are willing to pay for the monitoring plan.  I don't think professional monitoring is available tho.