Samsung Bluray Player not connecting

I have a Samsung Bluray Player (BD_D6500) not connecting to Serviio. When I first installed Serviio it worked perfectly on this device...but then stopped and will not reconnect. I also have another Samsung SmartTV (less than 2 months old...can't get to model number) that it will not connect to Serviio either. It connects on 3 other Samsung TV's and BR Players...just not the two referenced above. Any help would be appreciated.