Ive got it solved!
The connection data window in AOG is broken on the com ports page. It will connect but show no data.
Here it is working in an older version

Now lets try the latest 5.6
The gn or gga does not matter, gps is displayed here only after the second time you come in? bug?
Try this button…

Pick GPS DATA

The data is always here

But in 5.6 the path back for the corrections is broken.
So Emlid still is awesome, AgIO has a bug for bluetooth ports.