Welcome to the forums @manuwweb! Thanks for reaching out.
Just to clarify that we understand the issue:
We submitted a test form to your website, and saw a custom message that the form was submitted from this page:
The form did not redirect us to a new page.
Can you confirm this is the correct form? What is the expected behavior? Can you provide a reproduction of the error you’re seeing so we can look into this further?
Additionally, have you searched our forums for related topics? If not, here’s a link to get you started: [Support Guide] Debugging support and help for Netlify Forms -- start here!