This procedure appears to have been changed in PayPal.
- Log into Paypal.
- Click Profile.
- In the Selling Preferences section, click Instant Payment Notification Preferences.
- Click Turn On IPN.
Former Procedure
- Log into Paypal.
- Click Profile.
- Click My Selling Tools.
- In the "Getting paid and managing my risk" section, find Instant Payment notification and click Update.
- Click Edit Settings.
- Enable Receive IPN messages (Enabled).
- Click Save.