I'm pretty sure that i have loaded the datapack:
I can craft [Netherrack] with 9 [Rotten Flesh], and get a diamond with [anvil] and [64 coal blocks].

But [Blast Furnace] cannot craft with [Prismarine Brick].

I got that, thanks!

As of 3.1.0, the recipe to get a Blast Furnace from Prismarine was removed because it was not necessary. Gold can be obtained by converting Pigs to Zombified Piglins with lightning. A lightning rod is obtainable using copper from a Drowned farm.