Could you give us more details please ?
If you are refering to the WinDev Mobile IDE detecting the android device to upload the software you must make sure your USB and device drivers for the device are working correctly and the device is seen by Windows.
Then the ADB (Android Debug Bridge) should normaly also detect the device.
WinDev Mobile is asking to ADB the list of devices, so if the device is not shown it is a problem of the ADB/USB/Device drivers and not directly WinDev Mobile.
Sometimes killing the ADB process via taskmanager will automatically restart it and will refresh your devicelist. Also detaching the device, waiting and reattaching the device could help.
You can also use the ADB command line tools to see if your device is detected by the ADB tool.
Danny