More user testing & tutorials within the first launch. Wallets are usually built by developers, who are inherently technical and familiar with the workflows they build. They need to sit down and watch someone who doesn't know anything about Lightning use their waller - then they might realize they should potentially include a pop-up on first launch, where people can watch a video walkthrough. Or scroll through a list of screenshots, explaining the functionality.

Having interactive tutorials, highlighting the UI elements wouldn't hurt either. The goal is to help the people understand, not to impress everyone with how well you can integrate dark mode into your Kotlin application.