Naming: Keep it short or it won't fit. Identify the app. What does it do for the user? Location naming can be effective for new customer discovery. Location app browsers will be curious and check it out. Some bank logos will fit.
Icon: Upload one high resolution 1024px x 1024px icon and the system will generate all sizes needed for the Apple and Google stores. Keep it fun and festive. Users see it every day on their screen. Use your brand colors.
Email: Enter person responsible for testing and releasing the app. A link to the test app is sent to this email address and can be shared with other testers.