Ps 4 Region Lock. Downloadable content (DLC) for games is region-locked. A regional lockout (or region coding) is a class of digital rights management preventing the use of a certain product or service, such as multimedia or a hardware device.
A regional lockout is a form of digital rights management that prevents the use of games outside a certain region or territory. It is therefore likely that no game makers would region-lock. Unfortunately, it's not as easy as just switching to a different region since you can't do that.
And I don't really get why it doesn't work on my EU-account in the first place.
Some games may only be available in certain countries by importing them (physical.
If you bought a particular game and its DLC via your new account, it should work as intended. Region-locking isn't a per-game kind of thing, so this question should have a pretty clear-cut definitive answer. And I know "DLC region should match game region" rule.