Find my friends
Find my friend app doesn’t work like it used to. After update, it tells me my friends are in a different location and I know they are not there. So aggravating. It was very handy till the last update.
iPhone X
See if anything here helps. Check the set up and make sure they are sharing their location.
Find My - Set up on your iPhone, Mac, and other devices
Find friends and share your location with Find My - Apple Support