I've installed FMP - have created a form but it is not working properly.

1. I can enter information on it, but when I submit I get a 500 error;
2. I've would prefer to use the html on my own page but can't seem to get the link to work;

How do I change the properties of the submit button?

main site: www.saritsoultherapy.com

www.saritsoultherapy.com/consultform.html

many thanks
Beth