Please be sure to use "Instaview" Wi-Fi network after switching to it from your home Wi-Fi network during the setup. For Motorola phone, you need to tap a button to connect to Instaview Wi-Fi network on a pop-up window. You can ignore that pop-up which appears after switching to Instaview Wi-Fi on other Android phones
You can look up your verification code from your computer instead of your phone. It seems not holding the progress of the app setup, we will fix the bug ASAP.