@Cindy68
You may just have to try a Factory Reset on the RokuTV.
On the left hand side (near the USB and HDMI ports) you should see a Reset button that you will need to press in and hold for about 30 seconds.
Just make sure you have a working physical Roku remote before attempting the Factory Reset or you will not be able to setup/activate the RokuTV.
Roku Community Streaming Expert
Just another Roku user... I am not a Roku employee.
Insignia RokuTV, Ultra 4660, Premiere+ 3921, Express 4k+ 3941, Streambar 9102