I'm having trouble with the following contact form, where the user correctly enters content in the one required field, but on submit the page is updated with the text "Error!", and the message "What primary areas of interest do you have? (e.g. crafting, electronics, 3D printing, etc) is required". Note that this is the one required field, and simple text was provided as content (e.g. the word "crafting"):
[contact-form to='info@euriskomelbourne.com' subject='[euriskomelbourne.com participant enquiry'][contact-field label='What primary areas of interest do you have? (e.g. crafting%26#x002c; electronics%26#x002c; 3D printing%26#x002c; etc)' type='text' required='1'/][contact-field label='Are there any specific things that you would you like to get from the eurisko event?' type='textarea'/][contact-field label='It would help us if you could tell us a little about yourself: your approximate age%26#x002c; level of experience%26#x002c; etc. Note that you don%26#039;t need to provide us with your name or email address.' type='textarea'/][contact-field label='If you%26#039;d be happy for us to contact you to ask you further questions or answer questions you have%26#x002c; please check here and provide us with your email address' type='checkbox'/][contact-field label='Name' type='name'/][contact-field label='Email' type='email'/][contact-field label='Do you have any questions for us?' type='textarea'/][/contact-form]
(FYI: no feedback is recorded)
The only difference from other forms that work for me is the email address field not being a required field. I don't want an email address to have to be supplied (this is anonymous feedback), and I've supplied a 'contact-form to' address to record the feedback. Even if I'm logged into the site, and the email and name fields are auto populated, I still get the error.
I also tried two other alternatives: one with the email address as a text field, and one with no email address field, but I still get the error:
[contact-form to='info@euriskomelbourne.com' subject='[euriskomelbourne.com participant enquiry'][contact-field label='What primary areas of interest do you have? (e.g. crafting%26#x002c; electronics%26#x002c; 3D printing%26#x002c; etc)' type='text' required='1'/][contact-field label='Are there any specific things that you would you like to get from the eurisko event?' type='textarea'/][contact-field label='It would help us if you could tell us a little about yourself: your approximate age%26#x002c; level of experience%26#x002c; etc. Note that you don%26#039;t need to provide us with your name or email address.' type='textarea'/][contact-field label='If you%26#039;d be happy for us to contact you to ask you further questions or answer questions you have%26#x002c; please check here and provide us with your email address' type='checkbox'/][contact-field label='Name' type='name'/][contact-field label='Do you have any questions for us?' type='textarea'/][/contact-form]
At one point during debugging/ analysis I also got a "Are you sure you want to do this?" with no actionable command option message page after clicking Update while editing the page in WordPress admin. That message appeared well after the problem first surfaced, and hasn't appeared since.
Have I made an error I can't see?
Any help or suggestions much appreciated!