Stuck at "Finding local radio stations" – NextRadio - Live FM Radio Review

Downloaded the app in iPhone (iOS 11) and iPad (iOS 10.3.3) and launched it on both. It got stuck at the first screen saying, "Finding local radio stations" and does not finish the process even though I'm under wifi. Closed the app and relaunched but the issue persists. What good is this app if I cannot use it? Please fix so I can increase star rating. If Apple unlocks the FM chip in future, will the app use broadcasting using the chip and without streaming?
Review by PowerObject! on NextRadio - Live FM Radio.