Hey,
my crops arent growing under the ground although i got enough greenhouse glass for the whole farm. Do the crops still sunlight to grow?

Pretty sure crops don't need sunlight, but you need to make sure the greenhouse glass is within the required distance above the crops (Which can be changed in the config)

Crops should still need light, yes.

@CowHItFace If you're using the 1.12.2 version, the underground fertility feature won't be available. From what I can gather, it was added not long after the 1.12.2 version.

The docs neglect to mention differences between versions; I was confused for quite a while as to why underground growing wasn't working until I perused the source and wiki revisions.