Attachment problem (saying required when not attachment sends but doesn't say

Hi,

I have a problem with one of my contact forms. Thank you for your help in advance

I have a file attachment option that is not required (as code shows below) and when I try and send a message it says ‘Please fill the required fields’ and points to the attachment part it also says on the bottom ‘Validation errors occurred. Please confirm the fields and submit it again.’ All the required fields are filled and it still comes up with this.

Also when I add an attachment and click send the progress arrows continuously spin and no message come up to say it is sent and yet when I check my mail it did indeed come through with the attachment?
I would like the message to send regardless of an attachment and tell you when the form has been sent.

Here is the link with the contact form in question http://lloydmaxwell.com/contact/
Here is the shortcode: [contact-form-7 id=”1395″ title=”Contact 2″]
Under the ‘Mail’ section and then File attachments I have: [file-461]

And here is the form code:

<p>Your First Name (required)
[text* your-first-name] </p>

<p>Your Last Name (required)
[text* your-last-name] </p>

<p>Your Telephone Number (required)
[tel* your-telephone-number] </p>

<p>Your Email (required)
[email* your-email] </p>

<p>Subject
[text your-subject] </p>

<p>Upload CV
[file* file-461] </p>

<p>Your Message
[textarea* your-message] </p>

<p>[submit “Send”]</p>

Thank you for your help

https://wordpress.org/plugins/contact-form-7/