I had the same issues then saw a post on this thread that putting the remote directly next to the inline wireless receiver worked so I tried that and it did pair finally. Why the signal transmission is so weak for pairing is beyond me, but the remote after pairing works at distance from the TV fine.
I just bought two new Roku Streaming Stick 4K (3820R2) and I was having the same issue with the screen stuck at "Pair your remote" screen. I tried all the trouble steps in this post and nothing seamed to work. After several times of powering off the stick to reboot all of sudden the one started to pair and the remote was about six feet away. Tried to get the second one to work with no luck on another TV. For how long this is been going on there seem there would be a standard procedure that Roku would provide to get this to work.
The one that does not work is:
Model: 3820X2
S/N:S0J7329MRVH1
I am hoping I get something back from Roku support on what I need to do next to get a new Roku device working.
My remote is not working either. It is very frustrating.
Model: 4801X
S/N: SODD328PX6C9
