Sigfox parse error: Why can it not send my message? - arduino

Question

I'm testing the Sigfox communication with a Breakout board BRKWS01 and a Nucleo-32 L432KC. I work with Arduino IDE. I can send a message of 12 bytes. I used 12 "char" to save my data but it did not work. Then I test with 3 "int" but I always receive the error message: "Error: parse error", and I don't know why.
This is the structure of my message:
typedef struct {
unsigned int temperature;
unsigned int latitude;
unsigned int longitude;
} Payload;
Here is my code:
#include "IO_WSSFM10.h"
IO_WSSFM10 mySigfox(10, 11, true);
typedef struct {
unsigned int temperature;
unsigned int latitude;
unsigned int longitude;
} Payload;
unsigned int counter=0;
void setup() {
// initialize digital pin LED_BUILTIN as an output.
pinMode(LED_BUILTIN, OUTPUT);
mySigfox.begin();
delay(50);
mySigfox.test();
mySigfox.getID();
mySigfox.getPAC();
mySigfox.getTemp();
//mySigfox.setPowerMode(1);
}
// the loop function runs over and over again forever
void loop() {
String sfResponse;
Payload p;
p.temperature = 1075847679;
p.latitude = 441300000;
p.longitude = 41000000;
bool statusS = mySigfox.send(&p, sizeof(p));
if (statusS) counter++;
delay(10000);
/*
bool statusSR = mySigfox.sendReceive(&p, sizeof(p), sfResponse);
if (statusS) {
for (uint8_t i= 0; i<26; ++i) {//RX= 01 02 03 04 05 06 07 08
Serial.println(sfResponse[i]);
counter++;
}
}*/
}
Could you help me please?