@Debs1960-
If it happened to me, the first thing I would try would be to restart the Roku.
Depending on your Roku model you'll find the "System restart" under "Settings > System > Power", or if you have no Power option, under "Settings > System".
If a restart doesn't do it, or if you don't have sufficient control with the remote to navigate the Roku menus, you can also restart by pulling the power plug to the Roku for a minute or so then plugging it back in.
** If yours is a Roku TV with "Fast TV" start enabled, turning the set off/on just puts it in/out of a low power standby state and doesn't give you a complete restart. Use the restart methods above.
Roku Community Streaming Expert
I am not a Roku employee, only a user like you. Please, no support questions via private message -- post them publicly to the Community where others may benefit as well.
If this post solves your problem please help others find this answer by clicking "Accept as Solution.".
Ultra 4800 | Streaming Stick 4K+ 3821 | TCL Roku TV 43S245/C107X