How to set my current location as Home?

I live in Guatemala City, I need to set my current location as Home, but so far is not working, I try different ways like type my home address, copy my current location GPS coordinates, and search the coordinates, but keeps showing a location miles away, I need to set my home location because I turn on Stole Protection, great feature btw, but is annoying if I can't set my home and work location, I try with my work too but maps can't find the name of the building, I try every posible name and keeps showing the wrong location, both places works pretty good on other maps apps, thanks for any help.