Help & troubleshooting for channels on your Roku device, including adding/removing channels, logging in to, authenticating, or activating a channel, channel-specific playback issues, assistance contacting channel publishers to report issues, and adjusting channel-specific settings.
Approximately two weeks ago, a BritBox series I was watching, MI-5, could no longer be accessed (the error message is DRM_ERROR: 2000). It is curious that it is the only BritBox offering that is problematic. Others I have tried work just fine. When I requested help from BritBox, they informed me that it is a TV problem--LG in this case. When I requested help from LG, they said it's a Roku problem. Imagine my frustration!
In some cases, removing the affected channel and then re-installing them helps. To ensure the process is successful, restart your device before adding the channel back in. We would recommend doing this from the Settings menu by navigating to Settings > System > Power (If you do not see a Power submenu, skip to the next step.) > System restart.
If the issue persists from one channel after attempting the suggestions above, videos from other channels play fine, contact the channel provider's customer support team to report the issue and get help. Channels on Roku are maintained by the channel developer themselves. In this case, there's likely an issue within that specific channel that needs to be addressed with an update from them.