Bugs Can't add items to the Glossary

[MrWriter]

I've been recently trying to build up the glossary of my story, but when I try to add a new item, it just doesn't post it. It worked before since I did some testing to see how it would look with pictures and stuff, but now I can't post anything there. Everything else works fine.

Link to the story: https://www.scribblehub.com/series/715353/road-to-empire/