No audio

i have been using plugable bluetooth dongle with amazon echo to play music from my PC using windows media player. Today morning it just stopped working. The connection seems to be fine but there is no output audio coming through from the echo. Media player shows that the song is playing

I can use Spotify to play music through my echo, but the bluetooth connection is not working. I tried reinstalling and reconnecting multiple times. and its set to default in sounds
its showing up in sound as speakers bluetooth hands free audio but still no sound