[Plugin: Contact Form 7] On successful Submit, no posts error

When I submit the form and it fails, I have no troubles with the page. However, if the form is successful, the page reloads with the error: Sorry, no posts matched your criteria.

On submit the url has added the “#wpcf7-f1-p91-o1” string, on both fail and success. But only the successful submission gives me no posts.

Besides fixing this error, is there a way to not have the url modified?

Thanks