I would like to add that we had the same problem. Pressing the little purple button inside the cover on the remote did eventually have an effect after holding it down for a couple of minutes.
Then we had to enter a code on roku.com/link
Then we had to sign into roku and apparently our rolku password was not the same as our nf password
Had to have them send a new password
Had to fight through the captcha , which is virtually impossible for a human to read, taking many many tries with another person helpingThen had to fight my way around the screen that insisted on payment information, even though no payment needed (I'd cancel nf first)
Finally made it past the horrible payment screen with https://owner.roku.com
Changed temporary roku pw
Then had to sign on to nf on my TV with remote with email and nf password.
By the time I did all the above, the family member that wanted to use roku / nf left.
It is working now.
I guess this solved the issue of whether we should order nf and roku for my mom - she would never have figured all of this out.
Anyway thanks for the post, I was ready to cancel my subscription. Time for bed, maybe I'll view tomorrow.
PS. The issue may have been caused by using the ethernet cable connected to roku , temporarily for connection to a PC. Next time we'll try to remember to unplug the roku box first. Wish the remote would turn off.