Please send me a PM with your Roku account email address, and include the serial number of the Roku device from Settings>System>About along with a summary of the issue you are experiencing. I'll be able to assist you further from there.
Re: Really weird problem: All but one or two remote buttons not responding
I twisted my remote as i pried apart... Simple. Manipulated the down button contact until worked. Using digital camera to see ir light is a helpful truck. Small back together. Good to go for how long i don't know. This has happened to me before. I usually just manipulate and it works for months.