Hello, im sorry but i dont really have a fix for that yet. If u take contracts that make you deliver to factories it wont let you unload if you dont own that factory. I am aware of the issue and still trying to find the fix for it.
No problem, and don't hesitate to tell me if u encounter any bug or issue on the map!
For onion you will need a multifruit harvester like the potato one. Hops needs corn/sunflower headers with normal combines. If i am not wrong those are the ones that require special attention. the rest should be fine with normal harvesters
Here is a link to a multifruit harvester pack: https://www.kingmods.net/en/fs22/mods/21713/multi-fruit-harvester-pack