A Paypal notification was refused

Hi

I have a customer using HikaShop and they receive the following mail from the HikaShop installation on order completion:

Hello,
A Paypal notification was refused because the IP 66.211.170.66 is not in the list of valid IPs :
173.0.88.*
173.0.84.*
173.0.81.*
173.0.82.*

Check the documentation concerning this issue at http://www.hikashop.com/index.php?option=com_updateme&ctrl=doc&component=HikaShop&page=payment-paypal-error#ip
This notification was for the order L10 on the website http://www.domain.co.uk/
You can access the order details directly by clicking on the link below after logging in your back end:
http://www.domain.co.uk/administrator/index.php?option=com_hikashop&ctrl=order&task=edit&order_id=10

Hi,

Here is a list of Payment error with some solutions so you'll probably find your answer there :

Paypal might change or add IPs for their servers when they need to handle more transactions. When your server receives a notification from another IP than the IPs of paypal listed in the paypal payment plugin options, you will receive an email automatically to your paypal address informing you of it. You can refresh this list of IPs by clicking on the link below. If paypal really added new IPs you should see them appear here. Otherwise, if you are sure that the IP from which the notification came from is a valid paypal IP you can add it to the list manually. If the notification came from someone else, it might be an attack attempt (if the payment has not been received on your paypal account for instance), in which case you can ignore it as the system blocked it. Finally, you can always disable this feature by removing all the IPs in the list and saving the paypal payment method options. You will always be able to retrieve the paypal IPs later on to reactivate the feature.

Just had this message for exactly the same IP 66.211.170.66
Clicking on the Refresh Ips link changed the allowed list to:
92.122.150.*,173.0.81.*,173.0.88.*,66.211.169.*,173.0.84.*,173.0.82.*
But! IP 66.211.170.66 not in that list - suppose have to add manually...

Client payment on my Paypal account OK.
Have the manually confirm the order and send email to client.