Hello LisaC, 
Thanks for giving us a head up. 
We'd like to know more about the issue you are experiencing so we can best assist you. As suggested above, have you tried restarting your Roku device to see if it helps? Could you also tell us how are you powering your Roku device? Is it connected to the USB port of the TV or a wall outlet? In some cases, the USB power provided by the TV is not sufficient to power the device. Even though your Roku device may appear to be working, running with insufficient power can lead to instability, crashing, and other unpredictable behavior.
Using the included power cord and power adapter, we suggest plugging your Roku into a working power outlet in the wall. Powering it through a power outlet in the wall has the additional advantage that your Roku player will not need to power up every time you turn on your TV. This means your Roku player will be up and running faster than it would be connected to a TV.
Let us know how it goes. 
Regards, 
Nimfa