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Problems with the Responsive Tables plug-in doesn't seem to be working

I have installed and am using the Responsive Tables plug-in on my site Sunshinenglish.com but the tables on these pages :-

http://sunshinenglish.com/schedule
http://sunshinenglish.com/kaisya
http://sunshinenglish.com/coce
http://sunshinenglish.com/lessen
...appear jutting out when viewed on our mobile devices (Nexus 7 and iPod Touch).
I am wondering whether I have made a mistake with the coding or impletation of the App and not sure where to go to get help on this.

responsive tables

I have installed and am using the Responsive Tables plug-in on my site Sunshinenglish.com but the tables on these pages :-

http://sunshinenglish.com/schedule
http://sunshinenglish.com/kaisya
http://sunshinenglish.com/coce
http://sunshinenglish.com/lessen
...appear jutting out when viewed on our mobile devices (Nexus 7 and iPod Touch).
I am wondering whether I have made a mistake with the coding or impletation of the App and not sure where to go to get help on this.