Having the same problem.
Have tried recreating the file 3 times, also uninstalling, deleting then reuploading and installing a couple of times as well.
I had it working perfectly a couple of days ago, and I can’t think what I might have changed that’s done this.
url to contact page is currently:
https://www.ausseasailingschool.com.au/temp_site_local/contact-us
Only other plugin is a random image generator, latest version of both wordpress and contact form 7.
