Sign up boxes sign up change.

When I make the sign up boxes optional (with the question mark) and save, they randomly change to mandatory and my clients get an error because they are now answering questions that doesn't apply.

Thanks for testing out this brand new experimental feature!

There are some restrictions to how this works. You can NOT set the following types of fields as "optional":
- email address
- dropdown lists
- comment box
- integers
- dates

We have added additional instructions to the page to make this more clear.

This video explains more about setting fields as "optional" and even explains how you can make dropdown lists optional: