I noticed this some time ago, but thought it was just me. While posting to the L&L forums, the “Add Files” button doesn’t work and I’ve had to switch to my Mac to post screenshots. I’ve become so used to doing this that I stopped thinking about it. 
See this thread:
[url]https://forum.literatureandlatte.com/t/done-feature/50549/9]
Well, it doesn’t work on 13.5.1, on an iPhone 8+ in Firefox. It does, however, appear to work in Safari. iPad 6, 13.5.1, add files doesn’t work in either Safari or Firefox.
Might be an iOS 13 er… unexpected result… 
I should’ve included that I had used Safari. I just tried with Brave browser; Add Files worked. As a troubleshooting step—to mark as done—you could try after clearing cache/website data if you’ve not yet. I had none to clear.
I’m going to install 13 soonish…waiting for some bugs to be sorted. It’s early days yet. 
