On Power Tools for G Suite's Privacy Page you can request and collect all the privacy and GDPR related information that Power Tools for G Suite is providing.
The privacy policy by is a legal document or statement that discloses how Power Tools for G Suite gathers, uses, discloses, and manges their customers' data.
The basis for Power Tools sharing, adding, uploading, hosting, accessing or sending personal data out of Europe. Vendors can also add a description of their own impact assessment for data transfers.