Need DirecTV code for Roku TV 65R6C7

Just bought this TV (which I love) but I can't get the DirecTV remote paired to it. I have tried every possible code I can find and none work. The DirecTV list of Roku brand TVs does not include my model number. I have tried every possible Roku model as well as all other brands that support Roku. The DirecTV code Lookup tool doesn't even include the Roku brand. I also tried the code 991 then press Channel Up until the Tv powers off. Still no luck. I am at wit's end. As it stands, I will need to use the DirecTV remote for channel selection and the Roku remote for volume and power. Help!!!