I've updated my website from open cart version 1.4 to version 2.0
I know this issue has been asked many times and I've googled also but couldn't find the solution for the problem.
I just integrated the new Google re-captcha on my open cart website contact us page.
But when ever I submit the page it gives me an error saying "verification code does not match the image"

Please help or guide me to a useful tutorial.

Thanx
