This game is a slow-burn ambient horror survival job simulator, where hours can go by with little to nothing happening.
A ton of horror exists in this game, and a lot of it is scripted to happen, but don't expect to be immediately thrown into it. Things start to pick up pretty much immediately after week 1 of Story Mode.
The transformers are meant to be something to maintain that forces you to go far outside, so adding a remote way to reset them would pretty much defeat the entire point of them.
The tutorial does explain selling items in the Interactions section, saying to put the box on the delivery point. Item boxes are further explained in a note inside the base, next to one.
Downloads are far from that slow, even at minimum upgrades and max power consumption. If it is taking several days to download one signal, you are severely neglecting something that affects download speeds. Could be broken servers, or you have not calibrated your satellites in a long time.