Hi nawork
Saw your post unanswered for a long time.
See if this works. Put off the Printer Icon off for the Grid layer in the object manager.
nawork:I cannot turn off print grid.
I am little confused. How can you change the sizes if the pencil icon is greyed out for the Grid layer ?
nawork:I can change the size etc but I cannot find where this option is fixed on. Pencil icon is grayed out.