Try loading the content again. You can close the guide using the Back or Close button and reopen with TV. If this does not work please continue to the next step.
Restart your TV
Press and hold the Power button on your remote for ~8 seconds and your TV will restart.
Restart your router
Switch your router off at the mains, leave it for 30 seconds before turning it back on. Give it a minute or two to reconnect, and then check your TV to see if this was successfully.
Note: Please do not leave this page while your router is restarting.