In E10, the HTML of a form name needs to be set before the form can be enabled. To do this, please follow these steps:
Click on the Gear Icon and Select "Settings":
In the new window, under "HTML Name" you can either manually type a name, or you can click "Generate". NOTE - If you are going to manually type a name, the system will ensure that it is unique. You cannot have 2 forms with the same HTML name.
A new button will appear named "Use". Please click that button, and select "Done"
Then, click "Save"