I need to integrate the PayPal Advanced Payment Terminal to work with Woocomerce for WordPress and send purchased items directly after successful payments as what Woocomerce normally do for digital products. The script can only send a confirmation email and I have to send the item manually every time I have an order. If you can make things automated and integrate the downloadable link also with confirmation email based on the product id from my database.
The downloadable link of the digital product should have a limit of 3 or 4 hours and then expires, or detect client Ip address to avoid spreading the link to the public ( You can suggest a sweetable solution for that).
I can send the payment script once needed, or work on my site directly as you like. Any additioan requests you get in touch.
NB: a diagram attached