no ais with gps in opencpn

[cepicscepics]

Hi, in opencpn, I can't always have my position and ais signal...
Gps works quite always but it don't when AIS work and viceversa
When ais work I have gps data in inspector but not in opencpn
I Made test also with a gps usb antenna, it seems more stable but same problem
My configuration is:

Rpi3
Gps BT antenna emtac
Daisy AIS reciver

Openplotter 8.0

If I open openplotter in Debug mode, the terminal say 'DEVLINKS'

I did this 
http://forum.openmarine.net/printthread.php?tid=79 
to install the BT antenna 

To install daisy I add a serial in openplotter NMEA 0183 tab in /Dev/ttyACM0 at 38400 baud

Thanks a lot