PayPal™ offers a service called Instant Payment Notification, or IPN, which can electronically notify a payment recipient with the status of a transaction.
This service requires the recipient to have a "listener" page to which PayPal™ can send these notifications. TroopWebHost has developed a listener page that will use these notifications to update your database.
You need to tell PayPal™ where to find this page.
While you are logged on to the PayPal™ web site, click on the cog icon in the upper right corner to open the Profile menu. Then select "Account Settings" from that menu. This will open a new page.
Click Notifications on the menu on the left. When this page displays, look for "Instant payment notifications" and click the Update button on that row, as shown below.
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This will display the page shown at right.
Click the Choose IPN Settings button to continue.
You should then see the page shown below.
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Copy the following text into the Notification URL field:
https://www.TroopWebHost.org/PaypalProcessStatus.aspx
Click on the radio button labeled Receive IPN messages (Enabled)
Then click the Save button to save your changes.
You are done with the PayPal™ part of this process.