Directory plugin signup button not working

On this url, http://stpetebeachbusinesses.com/listings/signin/?redirect_to=http%3A%2F%2Fstpetebeachbusinesses.com%2Flistings%2Fadd-listing%2F

The signup and forgot? tabs are not working. Please help fix this issue. It's important as no one can add a listing until this is fixed.

Thanks