p.s.
More important, why you don't read where you write? Please focus next time. This is topic about " Boutique support forum for Joomla 2.5" and you're using "gk Instyle" and this is responsive template, I used it few times and all works. Also other GK customers used it & still use it.
Maybe you disabled too much in template settings, RWD option? hmm.
p.s.
So I guess the problem is somewhere else. If you have budget I suggest to hire someone to fix all issues.
If not really, you have to do all alone, but start from checking template settings.