Earlier quoted context omitted.
It looks like it's a US-based company without enough of a European presence to fall under their jurisdiction.
https://gdpr.eu/companies-outside-of-europe/ it looks like it would? I'm no expert though.
They can say this all they want, but if you have no presence in the EU, and your jurisdiction does not have any agreement to apply GDPR regulations to you, then this is at most a strongly worded request.
Barring explicit agreements to the contrary (treaties, extradition agreements, etc), by definition a country's laws are only enforceable there.
If PDL has no business in Europe, no plans to expand there, and there's no treaty or other agreement making the provisions enforceable against them, the EU can say whatever it wants but PDL has no legal obligation to do anything about it.