DNR ONE is the data foundation underneath every DNR product. It is not a thing you buy or switch on separately.

It is ungated and included in every plan, including Free. As the product page puts it, it is included in every plan because it is not a feature, it is the foundation. Your LEDs, dashboards, overlays and decks all read from it.

One caveat worth knowing, because it is stated plainly rather than hidden: coverage is rolling out sim by sim. Where a sim is not yet covered, DNR products fall back seamlessly to their standard data feed, so nothing breaks and nothing goes dark. You simply get the ordinary behaviour rather than the enhanced one in that title.

If something looks different between two sims, that is the most likely explanation, and it is not a fault on your rig.