Thank you. But I don’t understand why my child theme isn’t active. I put a directory called “stitch-child” in the “themes” directory and added a style sheet. Is this not the right way to add a child theme?
Yes, what you have done sounds correct, but then the child theme should show up under your Themes in the Dashboard and you need to activate it – just like switching to any other new theme. Also, you will need to redo any settings and options you’ve done in the theme – as not all of those are carried over to a new theme (child or not).