Table in Event Registration Plugin not showing right

Hi,

I am using Event Registration plugin http://wpeventregister.com/ and the registration form and content is showing with enourmous spacing all over (see private link) – I have spent all day today trying to do things to the plugin css/ costum.css and the plugin PHP-files – but no luck – is there any way you may help me with this problem?

Look forward t hearing from you!