Hi, I recently bought a Samsung Smart TV UE43TU8600U and I cannot get Alexa to respond.  My internet is working fine, I can connect to all streaming apps and watch telly just fine.  Bixby worked.  So the remote control interface is working.  I turned off and unplugged the telly and my router for some time and restarted it all.  Still no luck.  Please help?  Thanks, Konni

PS: my TV is registered with my Amazon Prime account