Structures and Block's wont generate in custom dimension

I made a custom dimension, the Aether, with a custom biome, the Holy Ocean (not actually an ocean biome). The Aether is generated with "normal" generation (not nether-like)
Since I'm using custom blocks, I decided to make my trees as structures. they are both good nbt files, and the Structure Block is in the proper position (center bottom).
However, they won't generate.

EDIT: The Structures now spawn. I still need help with the Block generation, though.
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Additionally, ruby ore, which spawns exclusively in the Aether and is kind of OP, does not spawn at all. (It is supposed to replace Aether-stone an average of 3 times/chunk, and i've searched for hours and cannot find it).

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Relevant Screenshots:

Aether Dimension: https://imgur.com/a/80T4zOj

Holy Ocean Biome: Image — Postimages (postimg.cc)

Small Holy Tree: https://ibb.co/tKsN5DT

Ruby Ore: properties, generation

NBT file (custom blocks are loading in as stone): https://ibb.co/0Krfzd9

Thank you for taking the time to help me and please get back soon!