Kunena does not work in BLOGS

I installed KUNENA in der-eule-verlag.de . You can call up "Forum". But then it is not possible to log in. The site seems to be frozen. I tried KUNENA in other Joomla installations, it works. Please feel free to register and test. Is there any idea, why it doesn't work Regards Helmer

In the meantime KUNENA sometimes works. BUt not properly. Could there be any interference with an installed hotjoomla module? jquery? Regards Helmer

Add this to template_css.css:

INPUT.kbutton.ui-btn-hidden{
width:100%;
height:100%;
}

Hi, I added this with no effects so far. Helmer

Try:

INPUT.kbutton{
width:100%!important;
height:100%!important;
}