I have the same issue. I have four Roku streaming sticks and the problem has occurred on three of them most frequently. I can’t even wake them through the Roku app as they are not active on my home network. The only thing that seems to work is to reboot the stick, which is a pain. Help please!
Can you please provide more information about the issue you are experiencing? How are you powering the Roku device? Is the device plugged into the TV USB port or is it plugged into a wall outlet? We always recommend the latter.
With more information we will be able to assist you further.