Recently I followed the tutorial below to disable the auto-selecting variant and add "pick an option" instead. So, my clients would be able to choose the variant manually. But I had to add another code to fix the installment information and now I need to undo the "pick an option" code so that the installment code, works perfectly. Can someone please help me to undo this? I tried to do it myself, but in the 3rd step of "Edit your product page template:", I had to delete some codes and now I don't know how or where to put it back.