Go to your android settings and pair your android device with the BlueTooth NMEA transmitter.
Start iNmeaLogger, select til right Bluetooth device and press start.
Connect your device to your Network.
Start iNmeaLogger, enter protocol and IP/port numbers and press Start.
This will record a log and enable you to send that log to us for debugging, in case some NMEA informations are missing or are misinterpreted.