Nothing you need to worry about. It's saying: "the way we used to do things has changed and all that effort you put into getting it to work is probably broken now. Please re-do all the effort to match the new way of doing things. Vent your complaints and frustrations HERE where other developers can see them(we're probably going to ignore your comments though)"
If you grab the URL of the image from the email that arrives in google, take that and paste it in to the url and it shows then its google blocking it. If it doesn't show then "why doesn't it show" is what to look for.