Is there a way to trigger a library update from Plex for iOS/other players?

I just hit an example. Don’t yet know why, but my Web Client is unstable* and I can’t control or modify our PMS. I wish I could at least scan library files from my iPhone so we can watch the movies I’ve added since the web client went wonky.

*The sordid thread is here if anyone wants to take a crack at it.