Try again
You can close the menu or the guide using the back button. Then open it again using the menu button on your remote.
Restart your box
The old “switch it on and off” routine. Overused but it can often help resolve the issue. Press and hold the 
button on your box for 8 seconds, then let go. You’ll be greeted with a friendly ‘Hello’ telling you that your box has restarted.
Further help
If the previous steps didn’t fix the issue, you will need to give your box provider a call. Contact details can be found on our Useful Contacts page.