unsigned long ledStarted = 0;
const long interval = 5000;

void loop()
{
bool stopRemoteXYFor10Seconds = false; // set this variable to true whenever you need to stop remotexy for 10 seconds.

  uint32_t now = millis();
  static bool stopRemoteXY = false;
  static uint32_t stopRemoteXYMillis = now;

  if ( !stopRemoteXY && stopRemoteXYFor10Seconds )
  {
    stopRemoteXY = true;
    stopRemoteXYMillis = now;
  }

  if ( stopRemoteXY && now - stopRemoteXYMillis >= 10000UL )
  {
    stopRemoteXY = false;
  }

  if ( !stopRemoteXY )
  {
     remotexy.handler();
  }
   unsigned long currentMillis = millis();
  if (currentMillis - ledStarted >= interval && remotexyStruct.connect_flag!=0 ) {
    ledStarted = currentMillis;
stopRemoteXYFor10Seconds = true;
  }
}

To stop remotexy handler, just stop calling RemoteXY_Handler() from loop(), using delay() (noob's way), or using millis() like in the Blink Without Delay example from Arduino IDE.

Note that you can possibly create more than one RemoteXY interface in the same program. So multiple users could connect to these multiples interfaces. You can use the same RemoteXY_CONF array for all interfaces but the RemoteXY struct must be unique to each interface.

http://forum.remotexy.com/viewtopic.php?id=15

There is no proper way to do that

When a Control (Buttons, Sliders etc) value has changed, assign millis() to a variable, and periodically check if ( RemoteXY.connect_flag == 1 && millis() - variable >= e.g. 30 seconds ), if true then stop calling RemoteXY_Handler() for like 10 seconds, this will kick the currently connected client and allow a new connection

It's possible to do something more elegant, but requires to write a custom remotexy library

also , if it is possible to make it if device connected and another one try to connect disconnect the first connection and esablish another one

so please help me to make this idea come into reality