My printer only prints one side

1. 1

   On Print and export, tick Printer is one-sided.

2. 2

   Download the first side and print all your copies at Actual size.

3. 3

   Pencil a cross on one sheet, so you can see which way it comes out.

4. 4

   Turn the stack and put it back in the tray.

5. 5

   Print one sheet of the second side to check, then print the rest and fold.