Connectify and Galaxy Grand duos android 4.2.2 hotspot connectivity issue

When using connectify for the first or after a long time, the mobile connects just fine to the hotspot untill 2-3 days pass by and it disconnects and stops displaying the name of the network in the wifi networks list. I tried switching off and then on the network and my mobile's wifi but no good. The mobile does display other networks but not the one it was using for the past 2-3 days.