my embedded pins aren't showing up when I click the "Pin It" Button

I manually add upload a pin to each of my blog posts and enter this code before the html so that it doesn’t appear on the page, but when I click the “Pin It” button, it does appear and I can pin the pin. It’s been working great for the past month or so, and all of a sudden, the pin isn’t appearing when I click the “Pin It” button – so I can’t use the embellished pin that I created. Help.