I tried using the follwing settings and now its working on every apple device.
Step - 1 Make Allow HTTP check box as True in QMC > Proxies
Step -2 Use Any other port except 80 , ( please ask the server admin to enable this new port on your server )
Step - 3 Put the IP in Whitelist in QMC > Virtual Proxies.
Restart the QMC
and its works