If your landing page is not properly redirecting to your custom Thank You page there’s a few things you’ll want to check.
First, make sure that both the landing page AND the Thank You page are published. If the Thank You page has not been published, your landing page will default to the internal basic thanks and share.
If both pages are published, make sure you’ve properly connected your Thank You page to your landing page from within the landing page editor. (Thanks tab>Redirect Options – select your Thank You page from the drop down list).
If your page is still not redirecting, send us a message to email@example.com