Missionplaner doesn't see my gps

Hi, missionplaner doesn’t see my gps. I had an old gps’ and when i tried them, there was GPS2: 3D fix problem and i couln’t solve so i bought a new one.
I calibrate the new one and but there is nothing. The gps is working i’m sure of that.
Can you help me please? (i use gps2 pin btw)
My parameter list about GPS2:
GPS_TYPE2 = 2
GPS_AUTO_SWITCH = 0
GPS_AUTO_CONFG = 1
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It has nothing to do with Mission Planner, it is your ardupilot not recognizing the GPS.

. Check your module type
. Check serial port settings (protocol and speed)
. Check wiring