CBS All Access is a wholesome package of unlimited TV streaming services. You can enjoy the broadest collection of TV entertainment via the CBS All Access app. However, some users may face specific issues with streaming CBS All Access on Roku. Here are some fixes associated with cbs.com/roku troubleshooting:
Start by restarting your CBS associated Roku TV device.
Try updating the CBS All Access app from the Roku Channels Store.
Also, try updating your Roku firmware to the up-to-date.