Hello,
You can contact us at support@acumbamail.com on this point, since what you are saying is not an incidence of the tool but it is the information of the servers, we will help you to understand and interpret them.
email marketing companies have to obtain information on openings is through the IP and it is data that, although updated continuously, can show the wrong country.

Another behavior that must be taken into account is that certain mail servers (such as Gmail) store the content of the email on their own servers and then serve it to clients, so the IP that calls us is always that of its servers, generally located in the US, which is why it is common to see this country when it is sent to these emails.

If you already received assistance and would like to update your review, here you can find the form: https://tacochange.paperform.co/

​I hope I have helped to clarify your query.

Regards