For an iPhone or iPad:

1. Open your phone's Settings app.
2. Scroll down to where you see the Counting Us app listed and open it.
3. Tap Location, and select While Using.  
4. If an error message occurs that says "Location Unknown," please refer to this FAQ.

For Android devices:

1. Open your phone's Settings app.
2. Tap Location. If you don't see Location, then tap Security & location and then Location.
3. Tap App permissions or App-level permissions. 
4. Scroll down to where you see the Counting Us app listed and open it.
5. Choose Allow only while using the app