Q: Find My Friends does not send notifications - iOS8

The Find My Friends iOS8 app is not sending the requested notifications when "Notify Me" is being used to alert arrival at/departure from a location.  All following/sharing location settings are confirmed amongst users (Find My Phone works, as does location in Find My Friends).

"Notify Me" will save the request, and appear highlighted in the main screen, and will stay that way as long as the alert conditions have not been met.  However "Notify Me" will clear to default, inactive state after the requested arrival/departure has happened, without having sent the nofitication.

Any ideas?

Thanks