Why cant I access my Lists (or add to them) through the app?

To prep before casting, I often use Lists on imdbPro. I would like to add to/create them through the app. Currently, although I have the app, I have to open up a web browser if I want to use imdbPro on my phone (through choosing to see the desktop version). Am I missing where it is in the app? Any help would be greatly appreciated! Thanks! Right now I am not able to access Lists through the app.