I have restarted my roku device, rebooted my internet box, and continue to be unable to run any app, sling, Netflix, youtube, etc. I have checked my connection on roku, it was successful. Please help.
Are you getting any sort of error? Exactly what happens when you attempt to open a channel? Is it the same for any channel? If you have an SD installed, have you tried removing it?
There is a big thread on this.
Try changing the themes, wallpaper and screensaver a few different times, and also a software update and a system restart.