in the options I didn't see anything that would allow me to use the K2 Black Reinforced Plate, which I'd prefer to have everywhere over the regular refined concrete
I'm working on a GUI that will help with that. In the meantime, if you place those tiles under the roboport, it /should/ use them to spread, but I haven't done much with that feature. Let me go test it in my dev world.
Okay, yes, I just confirmed that you can force the tile they'll spread with by placing them on that tile. (This doesn't apply to bricks / concrete / refined concrete, but should apply to all modded tiles.)
hello, im using electric tiles simplified ( https://mods.factorio.com/mod/SimplifiedElectricTile ) and it seems like the roboports are not seeing them, they still keep placing bricks ( a fresh save game ) i do have a lot of other mods active as well, maybe one of them is interfering, not exactly sure, the current roboports that im using are from this mod https://mods.factorio.com/mod/botsbotsbots