Rak5146 USB GPS and SF

I also put an external gps antenna but nothing
from the technical support when buying,
They told me that the usb adapter and this card have lbt and gps … but obviously it doesn’t work … I tried the original firmware and firmware from github … all possible settings and nothing …
I’m asking someone from RAKL Wireless to tell me if they tested it so I don’t waste any more time…
Regards
Nikola