Hi Eslosh -

- Umm.. no, it shouldn't be. Planets won't produce RO unless you have advanced materials collection and not every planet produces both RO / CO but they all produce something. If your planet isn't producing anything at all let us know and we'll take a look at it on the server. My guess though is you have a gas dwarf / jovian planet which only produce RO and you haven't researched advanced materials collection.

- No, you can only set planets as your source / destination. Small harvesters can do everything regular harvesters (or cargo ships or freighters) can do. The two main differences between all trade related ships is their speed and how much cargo they can carry.

- Your ships will only defend the planet they're located at.