在Instagram页面加入下载按钮与开启按钮，透过这些按钮可以下载或开启大头贴与贴文、限时动态、Highlight中的照片或影片
Same here. Had this error for two weeks already. Button is showing in the feed but not on post pages.
This is because that Instagram updated the html structure. Will try to fix this week.
Thanks for your Feedback ZhiYu_! Really love the Script, it's super helpful!
Does not work on individual Instagram pages for posts, only on the feed itself or the popup.