IPs not valid

Hi

When someone places an order, the PayPal payment notification comes through okay and in the Hikashop component the order is marked as confirmed. However, we get an email saying the following:

Hello,
A Paypal notification was refused because the IP 173.0.81.1 is not in the list of valid IPs :
66.211.169.*
66.211.170.*
173.0.82.*

In the PayPal plugin can I just remove the IP addressses and click save to avoid these emails in future? Would everything still work the same if I did that?

Many thanks for your help,
Johanna

Thank you for your help, Nicolas!