Funny URL

I have a contact form 7 form that has a strange URL after a message is sent:

http://www.licarpetcleaners.com/test-contact/#wpcf7-f784-p785-o1

Anyone know the #wpcf7 … stuff is and how I can get rid of it? I think it’s creating a problem sending mail.

Thanks!

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