In client mode, you may delete your existing wireless network profile, and then it will disappear.

It must be frustrating. Did you ever try PPPoE on the router? With a DSL modem in bridge, you may try it. :)

The list as below may let you down but...Disconnection problem could be a compatible issue. Is your modem in that list for India?...

http://www.tp-link.com/en/support/3g-comp-list/?model=TL-MR3220&location=1144 From the above list, your dongle and region are not included. The problem you mentioned seems like a compatible issue....

It is a really annoying problem indeed. Sometimes, a chipmaker's driver can be helpful. Your guys may give a try.

You may try a different computer to install this card and see how it going...