I am wanting to have 3 websites set up with PayPal payment and to send PayPal invoices our to customers. We currently have IPN set up for one website, the extension changes the notification URL when redirecting the user to the PayPal site, however I use shopping cart buttons on another one of our sites and I am now receiving 'PayPal Instant Payment Notification Warnings' everyday. Will we need seperate PayPal accounts for each site? I hope not as I would rather bulk everything together to benefit from the reduced fees. If anyone could help I would be most grateful.
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