I am having the same problem as I am unable to find the 'Sold Out' label to add on my products which have been sold. As I understand from your response I would also need to change my theme. Could you pl guide me as to how did you change the theme? Also, is your new theme a Paid theme and how did you figure out that your new theme had the option to show "Sold Out' labels?
Appreciate your response.
Thanks and best regards,
Yes, I am using a paid theme. I bought the theme before knowing about the Sold Out button. Basically, if I make my quantity 0 for a listing the Sold Out button appears automatically. I am using the Grid theme. To change your theme click Online Store and scroll down to Themes Library. There you can select a new theme.