Search Form on Mobile – Problem

Hi there,
It is a great plugin and is working well on desktops for the directory website that I am developing.
But like some others, I am also facing searchform problem on mobiles devices. It has stopped showing dropdown list of locations. However I have also noticed that – if I select the radius before keying location the location dropdown is displayed there. I don’t know if I have to be happy about it. here is my website : mahalocal dot com
I really appreciated your help, Thanks