Input element name 'an-element-name': The name can contain alpha numeric characters (a-z,0-9)and underscore( _ ) only. The name should start with an alphabetic character.
You were trying to use the 'Read the form from a web page' option in Simfatic Forms. However, some of the form elements in your form have an invalid name.
There are certain rules to be followed while naming the form input elements.
Update your form page and correct the input element names.
<input name='e-mail' type='text'>
<input name='email' type='text'>