We're sorry to hear about the issue you're experiencing.
If you haven't yet, we recommend starting with the troubleshooting steps suggested in this support link: How to fix your Roku voice or simple remote that is not working. If still no dice, please reply here with the serial number of the Roku device associated with the affected remote.
Keep us posted!
All the best,
I can't help you with that. Perhaps if you list that with the community at large, someone will be able to advise. If it is the only unit that will not pair, I would think it is the remote and not the boxes.
Thanks for the post.
We would recommend following the troubleshooting steps outlined by @RokuKariza-D in her post above.
Please keep us posted and we will be able to assist you further.
In my case, it seems the 4k+ sticks and the remotes all work but not with one of the provided USB-mini power cables. Is there something inside these cables that also prevents a generic (non-Roku) mini USB cable from working?
where can I get a new USB power cable?
The included USB cable is called the long-range wireless receiver, its what your remote and internet communicate with, not the Stick itself. The cable can only by bought through Roku, they have older version listed in the accessory page but it worthless on the newer 3820/3821 Sticks. The price of the old cable is $20, right new you can buy another 3820 4K stick for $25.
Welcome to the Roku Community!
We'd like to know more about how we can help. Can you please provide us with more specific information about the issue you are experiencing? What troubleshooting steps have you taken so far? Have you tried to remove and reinsert the batteries if this helps resolve the issue? Have you tried running the steps on this link to get your remote back up and running? How to fix your Roku voice or simple remote that is not working | Official Roku Support
Keep us posted and we'll continue assisting from there if needed.