Hi, while you're welcome to post here, this is not a general forum for Node. It's the community forum for NodeBB, a Node.js based forum software.
You'll probably have better luck with your question on StackOverflow or Reddit.
I'm trying to set touch icon. I successfully uploaded the image.
However, if I refresh the page, the field becomes empty.
And the icon show in "Add to Home Screen" is just a preview of the web page.
Are you hitting the save button in the lower right of the screen?