XL87LGV7W9EY7Y7A5Z9B3T7N6ZRX74 I'm having the same issue with the Merlin app. I agree, it is not a GPS or location problem, I believe the app uses some sort of Google location lookup API that Graphene does not support. For example, when I try to find species likely for my area, it asks for a location name, and the app won't find any besides the default "mountain view, ca". I have seen 'service not available' messages flash across the bottom at certain points.
I wonder if there is any workaround for this?