Went through all the steps to make forge server hosted from my computer. I was able to successfully launch the server, but after joining the server I noticed not all my mods were working. Most notably it didn't generate a world with biomes o' plenty when I made sure to set the biomes o' plenty default world setting in the configs to true. Also gravestone mod won't give me gravestones. I made sure to update my java and everything and yes, I made sure to create the server using the forge .jar file. Any suggestions on how to fix this?

Well this is embarrasing. I don't know how I missed this, but it fixed everything.   Thank you very much 🤣🔫

Cough.  

What do you mean? ExampleBlock is the small stone thing you see in the picture. It gets registered just fine (Via a DeferredRegistry), I can place it and then you see what is in the picture. This is about the hitbox/outline of the block, which I want to be smaller.

You've never use ExampleBlock?