responsive theme not displaying on iphone

hello, thank you for your help
my website: ArchanaInternational.com – is not displaying properly on my cell phone.

when i first downloaded ‘responsive’ theme, it worked perfectly.
this problem started when i upgraded to the ‘enterprise’ theme. i decided to stop using the enterprise theme because i want a responsive mobile site. now that i’ve switched back to the free ‘responsive’, it no longer displays my website properly on my cell phone.

thanks for your help