ESP8266的WiFi连接，自动IP分配不起作用的原因？

我写了一个简单的函数来管理我的 ESP8266 的 WiFi 连接。
我从 INI 读取数据，我想根据 INI 设置设置 wWiFi。
我有这个问题，如果我加入 ESP AP 网络只能使用静态 IP（自动 IP 分配不起作用）。
作为 ESP 客户端，如果我尝试断开与一个网络的连接并连接到另一个网络，则失败（返回值 7）。有什么帮助吗？
代码：全选void WiFiConnect(const char* filename)
{
  IPAddress mask;

  if(ini_open (filename))
  {  
    NetworkChoice = ini_read ("NetworkChoice", "network","0");
    ClientSSID = ini_read ("network" + NetworkChoice , "ClientSSID","BuddaceCasa");
    ClientPassword = ini_read ("network" + NetworkChoice , "ClientPassword","25399750057853538077");
    ClientSSID0 = ini_read ("network0", "ClientSSID","BuddaceCasa");
    ClientPassword0 = ini_read ("network0", "ClientPassword","25399750057853538077");
    ClientSSID1 = ini_read ("network1", "ClientSSID","BuddaceCasa");
    ClientPassword1 = ini_read ("network1", "ClientPassword","25399750057853538077");
    ClientSSID2 = ini_read ("network2", "ClientSSID","BuddaceCasa");
    ClientPassword2 = ini_read ("network2", "ClientPassword","25399750057853538077");
    HostSSID = ini_read ("host", "HostSSID","CV19Archimede");
    HostPassword = ini_read ("host", "HostPassword","PlasticoCV19");
    HostIp = ini_read ("host", "HostIp","10.10.0.1");
    HostSubnetMask = ini_read ("host", "HostSubnetMask","255.0.0.0");
    ini_close();
  }
  else
  {
    NetworkChoice = "0";
    ClientSSID = "BuddaceCasa";
    ClientPassword = "25399750057853538077";
    HostSSID = "CV19ArchimedeDef";
    HostPassword = "PlasticoCV19Def";
    HostIp = "10.0.0.1";
    HostSubnetMask = "255.0.0.0";   
  }
  Serial.println(NetworkChoice);
  Serial.println(ClientSSID);
  Serial.println(ClientPassword);
  Serial.println(HostSSID);
  Serial.println(HostPassword);
  Serial.println(HostIp);
  Serial.println(HostSubnetMask);
      
  // Connect to Wi-Fi
  //WiFi.mode(WIFI_AP_STA);

  WiFi.mode(WIFI_AP_STA);
  WiFi.softAPdisconnect();
  WiFi.disconnect();
  delay(1000);
  
  Serial.println("Controllo disconnessione");
  Serial.println(WiFi.status());
  
  ip.fromString(HostIp.c_str());
  mask.fromString(HostSubnetMask.c_str());

  WiFi.softAP(HostSSID, HostPassword);
  WiFi.softAPConfig(ip, ip, mask);
   
  WiFi.begin(ClientSSID, ClientPassword);
  WiFi.hostname("CV19Archimede");

  WifiRetry = 0;
  while((WiFi.status() != WL_CONNECTED) && ( WifiRetry < WIFIRETRY))
  {
    delay(500);
    WifiRetry ++;
    if (WifiRetry > WIFIRETRY)
    {
      WiFi.disconnect();
    }
  }
  Serial.println("stato corrente");
  Serial.println(WiFi.status());
  Serial.println(WiFi.localIP().toString());

  ////Serial.println("Stato Wifi = " + String(WiFi.status()) + "fine stato" );

  MacAddress = WiFi.macAddress();
  WiFi.macAddress(mac);
  ClientIp = WiFi.localIP().toString();
  HostIp_Read = WiFi.softAPIP().toString();

  ip = WiFi.localIP();
  hostip = WiFi.softAPIP();

  WiFiEspNetwork();

}