Sadly Twitter updated their Website, which was a reason to leave.
Sometimes I like to browse stuff there (without an account). This Plugin was really helpful, sadly they updated the Guest-Theme now too... Since then your Plugin doesn't show the hidden content anymore, probably due to the change in their HTML-Code
Edit:
I took a look at their code, most CSS classes switch over time (in HTML and CSS-Code), so it will probably not possible to do an automated actions, since you can't target stuff, The same issue exists with IDs
See more here https://www.google.com/search?client=firefox-b-d&q=react+obfuscating+classes+css