Hi,
Thanks for the email. I have checked your website. Yes, you are right, the TABs don't work. But it is related to your Joomla Administrator template.
But the good thing is, even though the TABs wont work, all the parameters are listed line by line, you basically just need to scroll down to find all the parameters. Just the "grouping by TAB" feature is not working, and it is not a big deal.. None of the parameters are hidden, they are all there.
Regards