A few of my forms are greyed out and not working on our website.

Considering that you did not provide us ID or your forms or URL of your website I have checked forms on your account and I found 5 forms that are disabled. 

http://www.jotformpro.com/form/60134236209952 

http://www.jotformpro.com/form/53625352916963 

http://www.jotformpro.com/form/60546167033957 

http://www.jotformpro.com/form/31115680189959 

http://www.jotformpro.com/form/33465258014957 

Are those the forms you are having issues with? Inside of this guide you can find how to enable your forms: https://www.jotform.com/help/180-How-to-enable-disable-a-form 

If you have issues with some other forms, please provide us ID of those form and URL of your website.

Hope this will help. let us know if you need further assistance.