By default, your form will have a thank you page designed by Wispform. If you are on the paid tier, you will have the ability to change the text in the thank you page and provide a redirect URL so customers can return to your website after they complete the form.
Custom thankyou page is a paid feature. If you are on the basic tier, you will be prompted to upgrade to Wispform Pro
for $10/month when you try to create a thankyou page.