Help getting started with Roku devices, including setup, connecting your device to your TV, linking a Roku device to your account at my.roku.com/link, adding channels, subscribing to services, and more.
Re: all of a sudden no devices work and no apps work anymore. Did something happen at ROKU?
In general, Roku has nothing to do with channels/apps working. If every channel doesn't work then reset/unplug the power from everything - your modem/router and your Roku device.