Hi, I have the set the app logo, favicon, and icon for iOS Home Screen. These icon images are still showing up all black, how do I change them to my app’s logo? Attached are: link appearance in a DM, and blank logo appearance in mobile web browser (vs how an app like LinkedIn’s logo appears)
Hi! Have you deployed your app to live once you changed the icons? Also, sometimes the change takes a few hours to propagate so you might want to re-check in a while.
It might also take a while for Google to re-index your site. Or it might be cookie related. 
I changed the icons and deployed them last week or earlier. These are specifically the settings (that have been deployed for days)
Hi there,
I am having this same problem and wondered if you got it figured out. Mine was working initially but now it suddenly isn’t for no reason. My homescreen icon just shows up gray with the app’s initial.
Have you deployed your app to live so soon? Sometimes it takes a while for the changes to be effective.
No, I didn’t make any changes to Live in the last week. It was working and now it’s not for no reason.
I think it was the “Thumbnail used for links” under the SEO / metatags tab in Settings.