Alt text doesn't show up using custom code blocks either. It's in the code, but upon Inspecting, it just isn't there. If anyone figures this one out, pleeease tag me.
@Megalomaniac, can you pleeeeeease help meeee? Would love to know what I'm doing wrong. It's just for 8 image blocks with captions on a Page... I put the big code (along with ajax line) in Settings > Advanced > Code Injection... I put the button before the content.. I called it Show More and made it lead to #expand-8 ... I also tried lower numbers just to see... Nothing. Never worked at all. :(