Check the following points:
- You are connected to the WiFi network broadcasting NMEA data
- Mobile data are off if you use a phone
- You have allowed mock locations and SailGrib WR is the mock location provider
- You have activated “NMEA and AIS Connection” in “NMEA Settings”
- You have selected the correct NMEA data source. If your device is not referenced, you have filled in the 3 fields: protocol, IP address and port.
- Stop and restart the NMEA service in “NMEA Settings”. You should see the last 10 NMEA messages received.