Hand-held Sleep aid Portable Pulse Head Smart Sleep Device for Insomnia Relief and Decompression (绿色)

I was super excited to receive this in the mail only to discover that the piece of poo doesn’t work! To makes things worse, there’s no way to contact the seller or request a refund

The light came on, showed it was charged, but I literally pushed the + button 20 times and couldn't feel any pulse.