First problem I have is when we turn on our Roku the roku word just flashes and nothing seems to connect. Pushed reset button and got the screen to reset controller and did everything roku said for troubleshooting but not working.
That's very old model and remotes don't last forever, unfortunately there isn't a replacement remote for the 3500 stick anymore. If there was the remote would cost $20, where you can get all new roku with remote for $30. Maybe even less, what is offered to you on this page:
I have a Roku RC 41 model and it was working fine up until last night, I recharged the batteries, and it still won't pair at all, keeps flashing green light, the screen from Roku to pair it doesn't come on. There is something wrong on your end Roku, because even newer models are having the same problem, not pairing, there are dozens of complaints here about pairing. It used to pair quickly, now not at all now. Please fix this, it was working fine for years.
We no longer offer a replacement remote for the Roku Streaming Stick model 3500. However, we would be happy to see what we can do to help get you back up and running.
Please feel free to send me a PM with your Roku account email address and the serial number of your Roku device (printed on the side/back of the device) and I'll have our support team reach out directly to assist you further.