location intermittent

We have 2 teens using Premier on LG G3  phones with Android 6.0 and Family 3.4.8.15.  For some reason the location only seems to work when they are at home, when of course it's not needed.  If they leave the house, Norton says it can't locate them and to try again later.  A while after they return home it will locate them, there of course.

I've checked that location turned on, and the account says Premier on the phone (the "refresh" issue) as I've seen in other posts.  Any ideas?