403 – Form Submissions Blocked

Recently updated WordPress and now we are getting reports that users cannot complete the membership form.

We're sorry, you are not allowed to proceed
Your request looks suspiciously similar to automated requests from spam posting software or it has been denied by a security policy configured by the website administrator.

If you believe you should be able to perform this request, please let us know.

The page I need help with: [log in to see the link]