Recently I purchased a Q800C-XL Soundbar. I have connected the soundbar with WIFI and synced it with Smartthings.  After enjoying the Soundbar I powered off the soundbar from my power outlet. and when I have started soundbar again. it was disconnected from WIFI and out of sync with the smartthings as well. So then I have reset everything and connected with wifi and after some time I had power off. and next time same wifi disconnected.  and out of sync from smartthings. 

So now I need help to resolve this issue.

1. why wifi get disconnected?

2. DO I have to reconnect every time I Power On? 

3.  Is this issue in all the soundbars or in Q800C-XL only?

#https://www.samsung.com/in/audio-devices/soundbar/q800c-black-hw-q800c-xl/