I hope you fine all.
Couple of days i bought an app when I click in order to download it I redirect to this link
If it is your first purchase then envato has sent you an email to confirm your purchase. you have to confirm by clicking the link/button in that email. then you will see your item under your Downloads page.
If you didn’t receive the email then in your Downloads page there you will see a notification and a link to resend the confirmation link to your email. click on resend it will send email with confirmation link. so that you can confirm your email and your purchased will be ready to download.
Otherwise please open Help ticket and let them know. Envato Customer support team will be happy to assist you.