Cholo_8 on "[Theme: Responsive] layout calendar plugin"

Hello,
I am a great fan of this theme as it works perfect on many platforms. However recently I found an issue after installing the http://wordpress.org/support/plugin/all-in-one-event-calendar plugin.
The portrait mode of this calendar is not working on my iPhone. It is correct in landscape view and on other smartphones, ..
After some research to fix it myself I wasn't able to unfortunately. However I've been told it was due to the theme instead of the plugin as I expected.
Can anyone help me out with this one ?
Thanks