Find my friends stopped notifying correctly

Find my friends has stopped notifying properly. It was working up until a few days ago. But now it only notifies when I actually go into the app. I have it set to notify when my friend leaves their location, but they will already be at my house and it hasn't notified me. Then i click on it and then the notification comes up say " so and so left " address". But they left like 25 minutes ago.

It just started doing this. I have tried turning location services on and off, resetting phone. The actual locations are all working, there are no issues with service or location. Just that the notifications are not working

I'm on an iPhone 6s. Friend also has an iPhone 6 or 6s