Hi Craig,
Being French I know Saint Helena for historical reasons.
In some places, you may experience missing tiles while using the map or satellite view depending on the zoom level. It can be possible to zoom but no tile is displayed or the zoom level is blocked. Unfortunately, only the base map provider is responsible for that.
Switching from the satellite to the map view might partially solve the problem of the missing background information when adjusting your grid in Pix4Dcapture.
Note
It may also come from the fact that some countries intentionally downgrade the resolution of the basemap provider for political reasons.
Workarounds :
- Change the street or/and satellite basemap provider. In Pix4Dcapture, go to Settings > Map.
- Set a custom map provider like Google Maps. This community post and this comment describe how to proceed.
- Import a .kmz/.kml file. (on Android version of Pix4Dcapture)
Best regards,