Normally you can find the everything inside your Admin Panel below Contact > PayPal. If not: Make sure the Redux Framework plugin & Contact Form 7 plugin are installed!

1. Make sure you return data to the return (success) URL. See: https://developer.paypal.com/docs/classic/paypal-payments-standard/integration-guide/paymentdatatransfer/ > Activating PDT You can make sure, that it works, when you see some...

If you have two buttons on your site "Pay via paypal" and "Send form without payment." you not initially know in the mail what button the user has clicked. So you receive the same letter on both mails. So how do you understand from it which...

If y0u get a PayPal error like "Things don't appear to be working at the moment. Please try again later." then there could be several reasons. Look into your browser URL and check the ?flowlogging_id=c66110b7f8d55&code=EWP_SETTINGS The...