With the newest expansion to Destiny 2 came an unpleasant surprise for those who did not pay for the DLC, an inability to access parts of the game they previously had access to.  The Prestige level challenges were intended to scale with a player's power and with the new cap available it was no longer available for those who did not fork over cash for the DLC, as well there were several PvP modes that were also blocked.  They have since realized the error of their ways and both restored access and apologized; you can read that apology at [H]ard|OCP.

"The Prestige Raid was a novel experience that players value, even if they don’t own Curse of Osiris, and it was a mistake to move that experience out of reach. Throughout the lifetime of the Destiny Franchise, Trials has always required that players owned the latest Expansion."

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