I experience the same issues on iOS, newest App version (Version 2.10.0) on a older iPhone 5 with iOS 11.3.1, with a Bound played outdoors in the open. The Phone had a PrePay plan with some data volume (not clear whether it’s been used up before the kids played). Mobile Network was enabled but Mobile Data was first disabled when the kids played.
In the beginning, the first arrow pointed in the opposite direction. We then enabled Mobile Data and the situation improved a bit.
However locate was not really updated when playing. Only after switching back and forth with Google Maps could the kids increase the accuracy in Actionbound and locate the right places.
PS: Hope it’s OK to reactivate this topic …