It doesn't say in the instructions NOT to use the eraser. Rocketbook recommends (on website) to NOT use the eraser, that it can remove the coating on the pages. Do not use the eraser? The one ON the included pen? With "ERASABLE >>" written on it, pointing TO the eraser? The eraser on the included erasable pen on the paper that's specially designed to work with that pen (or the pen specially designed to work with that paper, whichever). Make this make sense. Have I ruined my brand new Rocketbook?