Review on LEFON Mini Digital AM FM Radio Media Speaker MP3 Music Player Support TF Card/USB Disk With LED Screen Display And Emergency Flashlight Function (Red -Upgraded Version) by Hanson Kendrick

I purchased this product on 10/2018. It worked great and until recently I was actively promoting this product. The sound just doesn't work anymore. The flashlight and display work, but there is no sound. I've tried resetting it by fiddling with the buttons and removing and replacing the battery. I read in the Q&A that the product has a 12 month warranty and excellent customer service. The problem is that I can't find the product manual and customer service number online.