I bought The Digital Deluxe Edition with the game. Then, I refunded the game, but not The Digital Deluxe Edition - it was my silent protest against it not working properly on SteamDeck despite its "✔️Verified" status. Now I re-bought the game, I have it installed with the "The Digital Deluxe Edition" as DLC, but Larian launcher still prompts me to buy "The Digital Deluxe Edition Upgrade".
So, how can I verify in the game if it is installed and available? Where should I find the content it promises? I'm at the beginning of Act One, if that matters.