Modifying template code for compatibility with IE 10,11..

Hello, I bought a template on “themeforest” site. Its called “Valera” and its an HTML5 responsive website template:
I really really like the template, but some features, like the gallery for example wont work with IE 10 and 11.
I was wondering if anyone would be interested in modifying the code so that it is compatible with the above mentioned browsers and how much would it cost.

Thanks in advance!


compatibility with IE 9 and above is mandatory of themeforest items. If it is not working you should contact the author to fix the issue.

Thank you for your reply. I contacted the author, but his reply was that there is no fix. He says he is working on it, but it looks like its been over a year already and still no fix.