Arduino MKR WIFI 1010 issue client board seeing server board AP

[rijt_graduation]

Hello!

I experience a problem, also occuring within ArduinoBLE, that the client board does not see the server AP (signal??). I tried switching roles & try to just scan networks, but it sees every AP except the one the server board is supposed to send. Can you help me?

The server code:

#include <SPI.h>
#include <WiFiNINA.h>

char ssid[] = "ArduinoAP";           // SSID of the Access Point
char pass[] = "";                   // No password for the Access Point
WiFiServer server(100);               // Create a server instance

void setup() {
  Serial.begin(9600);
  while (!Serial);

  // Create an Access Point
  Serial.println("Creating Access Point...");
  WiFi.beginAP(ssid);
  IPAddress ip = WiFi.localIP();
  Serial.print("AP IP address: ");
  Serial.println(ip);

  // Start the server
  server.begin();
  Serial.println("Server started");
}

void loop() {
  // Check if a client has connected
  WiFiClient client = server.available();
  if (client) {
    Serial.println("Client connected");

    // Read the request
    while (client.connected()) {
      if (client.available()) {
        char c = client.read();
        Serial.write(c);
      }
    }

    // Send a response
    client.println("Hello from Arduino #1!"); 
    client.stop();
    Serial.println("Client disconnected");
  }
}

The client code:

//client

#include <SPI.h>
#include <WiFiNINA.h>

char ssid[] = "ArduinoAP";           // SSID of the Access Point
char pass[] = "";                   // No password for the Access Point
WiFiClient client;                    // Create a WiFi client instance

void setup() {
  Serial.begin(9600);
  while (!Serial);

  // Connect to the Access Point
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid);
  
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("WiFi connected");

  // Print local IP address
  Serial.print("IP Address: ");
  Serial.println(WiFi.localIP());
}

void loop() {
  // If not connected, attempt to reconnect
  if (!client.connected()) {
    Serial.println("Connecting to server...");
    if (client.connect("192.168.4.1", 100)) {  // Replace "ServerIPAddress" with the IP address of Arduino #1
      Serial.println("Connected to server");
      client.println("Hello from Arduino #2!");  // Send a message to the server
    } else {
      Serial.println("Connection failed");
      delay(5000);  // Wait before retrying
    }
  }

  // Wait a bit before sending another message
  delay(5000);
}