This really needs “2ד resolution and graphics : it’s still stuck in the iPhone 4 days and uses iOS 3 HID/GUI.
Some processes are forms with pickers.
Other optional, and some mandatory (!?) processes are in separate areas and have non-standard elements.
For example, why is the “image” function a proprietary camera interface? It’s neither the iOS-provided one, nor a picker for images and files.
Elements where you can’t tell if it’s tappable or not, or loaded or not, are…what, just there for exploration and fun?
Some info is in an external web page, accessed via a popup. Some is a PDF in a web-view. Some things that look like menu items actually dial the phone!
I’ll help you redesign it for a modest fee. ;-)