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.
For more information about that channel's authentication and functionality, you'll want to contact the channel provider support directly to inquire further. Many channels on Roku are developed and maintained by the channel provider themselves.
I'm having this same problem trying to sign in to my Crunchyroll account using the Roku Express 4K. I ONLY and SPECIFICALLY BOUGHT this device to watch Crunchyroll. The sales person guaranteed it would work. And even the instructions say "If you need more help contact SUPPORT.ROKU.COM. But you DO NOT offer any support for this device except this forum. Now how the heck am I supposed to set up thus device to watch Crunchyroll when I have to depend on some future response from the forum. That's RIDICULOUS. Now I have to return thus purchase because Roku dosent offer support. You dont even offer a chat or send an email to tech department?
Does the issue only occur on Crunchyroll or across other channels installed on your Roku device?
Have you tried removing the affected channel Crunchyroll and then re-install again? If not, we suggest starting there. In some cases, removing the affected channel and then re-installing it may help. Restart your device before re-adding the channel back in to ensure the process is successful. We recommend doing this through the Settings menu by navigating to Settings > System > Power (If there is no Power submenu, proceed to the next step.) > System restart.