The GDPR stands for the General Data Protection Regulation. It has come into force on May 25th 2018 and replaced the Data Protection Directive 95/46/EC. It is a new set of rules designed to give EU citizens more control over their personal data. The regulation contains provisions and requirements for the processing of personal data. Not only will organizations have to ensure that personal data is gathered legally and under strict conditions, but those who collect and manage it will be obliged to protect it from misuse as well as to respect the rights of the data subjects.
The GDPR applies to any organization operating within the EU or processing data within the EU and any organization processing personal data belonging to persons from the EU. Since Presspage stores all their data, and thus also all the personal data, in Ireland, the GDPR applies to your relation with Presspage, even though you yourself are not located in the EU.