I lost my only key to my 2008 ford Mustang, got remade started and now car totally shut off?

I lost my only key to my 2008 ford Mustang, got remade started and now car totally shut off?

Check battery i'm not sure that's strange I would make sure there's not that Navistar or whatever its called for anti theft my dad had a chevy he wanted to let go back because it was junk and everytime we mowed we needed to move it and like 2 months of waiting for someone to take it it started shut off and wouldn't do nothing.

Have ford hook their computer up, clear all keys from the pats module ram, and program two new keys for you