I am using Guest Mode for my AirBnB unit. When guests sign in all is well, but can not sign because the device defaults to December 31, 1969. I have to use the remote to change the date from December 1969 to the current date, then the roku device will sign out normally.
Thanks for letting us know what you're seeing. Could you please provide a step-by-step account of the process you follow when you see this occurring on screen? If you could also include a picture of what displays on screen, that would be helpful!