I'm very sorry to hear that has happened. In order for me to help you most accurately, please provide the complete model code for this device.
i have smart led 55 " s7100 and soundbar samsung hw-f551 . at the first time i succeed with connecting the air track through the tv soundshare. 2 days after, and suddenly the soundbar is recognized through the tv but the tv cant manage to connect to it.
i took the sound bar to another let tv the same series and there it managed to connect properly . i got back to my first tv and same problem . the tv's has same software.
what to do ? i reset and reload everything but yet nothing changes