Ive heard those cause problems with chests.. Im not sure if thats the problem with why your stuff keeps disappearing, however, its worth at least moving the chests and seeing if that does anything. Its worth a shot. ¯\_(ツ)_/¯
The grass, I have plenty of. Iron, Im a bit short on. Gold, Im still in the process of grinding the mob arena. It would take me like two or three days till Im able to refund you fully again. :3
You skrub, its not that big of a deal. cx I require that you let me at least give you grass or Ill rek you.
Grass it is then! Lemme know when you move the chests. Ill come by and drop some grass in there. You should also try privating them, just to be safe. Im guessing you already know how to do that, but if not, just make them chest shops that sell air. c: