I've had my slingbox for a month and have not been able to use it successfully. The cast icon does not appear on the player as expected. I am trying to cast a Sumsung Tab E android to a Roku TV on my home network. The problem seems to be on the the Player for Tablet (free) app. I am able to cast via a smartphone but this is no use to me. Has anyone else had success getting Sling to address this? They say they have replicated the problem but there is no fix in sight.