You can redirect customers right after successful payment. In order to do that;
1) Global Redirection #
Set a target page from PaddlePress > Settings > Preferences. It will apply to checkout buttons that doesn’t override the data-success parameter.
2) Shortcode Parameter #
Pass data-success parameter to [paddlepress... shortcode. Eg: data-success="https://example.org/thank-you-for-payment"…