Dolby Atmos on Magnifi max sr 5.1

I bought the mignifi max sr, good quality , i enjoy them , but one problem .
When i first installed it i watched netflix and the green light on the soundbar was on
After few days the green light turned to orange and the sound is different now ,
The green light stopped from being on .

I have samsung tv ,
The eARC is on auto , the Anynet+ is on .
And HDMI 3 on from where the eARC of the tv is enabled.

What seems to be the issue ?
Thank you.