Got a new Nextbook3 and like it but everytime I click the icon for the Android App Store I get a message Update in Progress and it only goes about 10% of the bar then stalls for hours. Then wifi stops completely and in the top bar nex to the home symbol an ! underlined symbol appears and when you tap on it is shows todays date in format x/x/xxxx. Is my unit a lemon or is this an Android problem? Thanks.