Payment confiramtion mail

Hi,

First to tell you that this is great plugin and thanks for this …

Now I must ask you something.. I add this plugin.. connect to paypal.. and I sell PDF eBook… instead add card .. I create Buy Now button.. and on Download settings on Download item I check this option http://prntscr.com/587pbt for Purchase button behavior … and the problem is next.. I test payment with my another paypal account with yahoo mail.. and payment is done.. and I get confirmation from paypal that payment is send… but I did not get email with download link.. I wait hours for this.. its look like something not work correctly for me… I am not sure what I done wrong.. Test mode is not activated.. and my paypal mail is correct.. is it maybe there some option to add mail notification from me not from paypal .. after somebody makes a payment, is there a way to send them a message saying they will shortly receive and email with a download link to the eBooks? I don’t want them to freak out .. and I am not sure why I did not get this mail with download link.. on Payment History status is Complete…

https://wordpress.org/plugins/easy-digital-downloads/