Thingsuno doesnt see downlink message

[Pzijlstra]

Hi all,

I have a things uno and loaded the receiving example script form thingsnetwork.h.
it lets me do this:

#include <TheThingsNetwork.h>

// Set your AppEUI and AppKey
const char *appEui = "secret"; 
const char *appKey = "secret";

#define loraSerial Serial1
#define debugSerial Serial

// Replace REPLACE_ME with TTN_FP_EU868 or TTN_FP_US915
#define freqPlan TTN_FP_EU868 

TheThingsNetwork ttn(loraSerial, debugSerial, freqPlan);

void setup()
{
  loraSerial.begin(57600);
  debugSerial.begin(9600);

  // Wait a maximum of 10s for Serial Monitor
  while (!debugSerial && millis() < 10000)
    ;

  // Set callback for incoming messages
  ttn.onMessage(message);

  debugSerial.println("-- STATUS");
  ttn.showStatus();

  debugSerial.println("-- JOIN");
  ttn.join(appEui, appKey);
}

void loop()
{
  debugSerial.println("-- LOOP");

  // Send single byte to poll for incoming messages
  ttn.poll();

  delay(10000);
}

void message(const uint8_t *payload, size_t size, port_t port)
{
  debugSerial.println("-- MESSAGE");
  debugSerial.print("Received " + String(size) + " bytes on port " + String(port) + ":");

  for (int i = 0; i < size; i++)
  {
    debugSerial.print(" " + String(payload[i]));
  }

  debugSerial.println();
}

Now If I send a downlink it shows up in my application livedata tab but I dont see it in my serial monitor. as if the device doesnt see it.

How can I make the payload show up in my serial monitor ? If I send uplinks it works perfectly so the device is connected