I looked through the different posts to see if there were discussions on the same problem, but I didn't see any. Recently, I updated WP from version 3.2 to 4.4. After the update I noticed the pages with multiple tabs did not work (would not open) nor did the contact form. When I tried the form with the captcha feature, it would give an error message and not send. When I removed the captcha from the form and tested it, it seemed to go through okay, however I would never receive the email. Any help on this would be greatly appreciated since I am at a loss as to why it's not working.
Here is a link to one of the pages with multiple tabs. I've removed the "Request a Quote" tab with contact form and have temporarily replaced it with a link to send an email.
http://instrotek.com/material-testing/laboratory-products/corelok/