Hi Vennila,
For the Make It Native 9, have you tried the following: https://docs.mendix.com/howto/mobile/common-issues
Make sure that your computer and the mobile device are connected to the same network
If it's the network that's blocking communication between the MiN app and your PC, try creating a hotspot on your phone and connect your PC to that. Otherwise, add a rule to your firewall that allows communication.