GDPR compliance

Hi, I didn’t see anything in the documentation about GDPR compliance and wondered how the GiveWP Donation plugin deals with this, and relatedly, which features work if donations are done via Paypal offsite. I’ve advised my client that to keep things simple, they can use Paypal to accept payments so the donor’s personal info never gets stored on the client website. I do see that GiveWP integrates with Paypal Standard (and Pro). I’m specifically interested in setting Donation Goals for different fundraising campaigns, but I can’t tell is it’s possible to use that feature if the donations are done off-site.
Many thanks for any light you can shed on this topic!