This is how the default thank-you looks like
However, if you don't like Leonardo π€ͺ, or you want to change the thank-you message, you can do it here. Just click the Thank you page button, which you can find it beneath the live preview card:
Then you should see a view like this π
Redirect to your own website
After the testimonial is submitted successfully, you can redirect your users to whatever page you put here. It can be your own thank-you page or any other page to show your appreciation.