The sizes on your Order Confirmation PDF are not correct and look really strange - see example below
This is because you have either not created a SIZE BLOCK or the Size Block that you have created is not complete
If a size is missing from the Size Block the missing sizes will be added to the PDF header (on the far right).
If a size is entered twice on the Size Block, only the first instance will be matched therefore the number might not be in the column you want it to be.