Dev Help Please! – HOPE Spirit Box Review

Hi, I downloaded this app, accepted everything it requested & do not have my volume muted but nothing works. I get no sound graph when I do a test recording & it does not record or save anything. I cannot hear anything either. Can you please advise? I did watch the vid too. Thank you. I will update rating as soon as I can get this to work. Thank you so much!
Review by !!HelpPlz!! on HOPE Spirit Box.