Thank you for your question @lylejames.
CartBounty at the moment does not store or save customer IP address as it is not needed for sending out abandoned cart reminder messages and therefore storing additional personal data like IP address is not necessary at this stage.
At the moment we see this feature necessary for users who are more advanced and know what they are doing since excluding abandoned carts by IP address is not really something we would advise to do as it may lead to missing out on lots of abandoned carts.
For example, if you would like to exclude your own IP address from abandoned carts or you may look into server logs to see a specific IP that is visiting your store and creating multiple abandoned carts.
Just please be cautious using this filter as a single IP address can be used by multiple users and if you prevent a spam bot from creating abandoned carts, you may as well prevent real users from saving abandoned carts who may arrive at your store using the same IP address.