Fix hidden filter side bar code conflicting with th Wordpress theme.

I have installed a side bar but it is not showing or filtering on our shop page. I need someone with extensive coding experience to look at the plug-in and theme and fix the issue. Please do not reply if you do not EXTENSIVE coding experience. Do not waste my time. Please do not send pre written replies, YOU WILL NOT GET THE JOB. Please explain your experience and possible ideas ? to fix the issue.