Error processing the form code

I followed all the steps and have my Automatic Sign-up Form code in HTML – I have copied and pasted this into the widget – but keeps saying: The code below didn’t work.
There was an error processing the form code you entered into the “Automatic Sign-up Form Code” field.

I have the latest version of wordpress and I am note sure why this is not working.

https://www.ads-software.com/plugins/icontact-widget/