Hi @Seair -
I believe you are missing some required messages - you need RMC, GGA, VTG, and HDT to be sent. You may need to configure them to be sent at a high rate as well.
If the NMEA injector doesn’t seem to do the trick, you can follow the instructions for setting up the udp input on Serial 2. This post has the details on that approach!
If you just need the lat/long displayed in a widget, and recorded in telemetry file that is played back with the video, taking a different approach and parsing the serial messages with Node-RED could also work!