The thank you page is displayed to your new members once they purchase a membership. You can add a personalised acknowledgement as text, pictures or videos. For pictures, the largest possible image is preferable (JPEG, PNG, GIF, at least 2048x512 pixels, aspect ratio 4:1). For videos, upload your video to YouTube (an unlisted video works too) and add the YouTube link on your thank you configuration page – a play button will then appear.
