Problem GPS BR-355S4

Hello, I’m trying to connect a GPS receiver : The BR-355S4 from global sat

Accordingly to the user guide, I connected the 5v, gnd , tx and rx on my ardupilots (mini carrier board or pix4 mini) and I configured the baudrate to 4800. Ths GPS is fixing the position (I can see it with the led) but I got the GPS: no gps error, even if I cross tx and rx.

Did I miss something?

Thank you for your help.