Muse sound doesnt work


#1

hello

my Muse keeps silent
the first time i connected muse to my phone (Android) it played the intro session with guided voice and sound.
after that Muse keeps silent, even I checked Volume settings, all are in normal mode. Phone still produce sound with other apps.
Muse connected with app, circle filled with color, but the speaker icon dont have signal sign with it.

What should i do?
thanks