I have an old model Roku (mod. 2710x). I haven't used Roku in quite a while. The other day I tried hooking it up to my router, which is a NeartGear (CM500). The Roku picks up the router but keeps giving me an error message (14.40) after putting in my password. I know the password is correct as I just hooked up a Caption Call telephone (for hard of hearing people) and had no problems. I even went into my Router settings just to KNOW that I was using the correct password.
I tried it on an older Phillips TV and on a newer Samsung Smart TV. The Samsung is within 10 ft of the router. And of course the Samsung is hooked up to the router.