Making payments using MDE app?

[Lisa LSR]

Before I added the app to my phone, I could easily log in on the WDW site and make payments. Now it automatically prompts me to the app. I love the app, but can't find any of my payment info or where to make payments on it. Can't even find where to make changes to a reservation (which I want just in case I can add FD later). Wondering if I should delete the app until closer to time for my Nov trip?