Hello, I wanted to put the unloader at the station, but I only put the ghosts in their place, I wanted to put the unloaders themselves manually, but they are not in the recipes, through the mod that shows the recipes it is, but it is not available, I did not find any related technology. The world is not new, could this be the reason?

I appear to be having this issue as well...

I can't say for sure, but I think if you can't just add an unloader/loader it usually means something is in the way.
That is if you get a message about putting a ghost in due to obstructions.
I can't say for certain, but they appear free of recipes
Just clear the area one square each side of the rail and try again.

Hope this solves your problem.
I'm sure the creator would advise otherwise if needed.

I also have no recipe. whats more, when I try to cheat-add it through the console command, I am able to place it on tracks, but if I try picking it back up, it disappears forever. also, the thumbnail looks like a steel chest