So I have an lg TV and the app is working fine which I know doesn't help but there are some quirks I've had with the TV itself over the years that has affected apps particularly after updates.
1. Double check your location - settings>general>location. If the field is blank, enter the first part of your postcode and press enter. It will ask you to retune the TV.
2. Untick and then retick the end user agreement. It may sign you out of app accounts when doing this.
3. If you have an LG account on the TV, sign out.
4. If you are using a ethernet cable, check in settings that it is working and hasn't set itself to WiFi only. Check that IP is set to 'automatic'.
5. Free up some memory by going to the web browser, settings and 'delete history'.
Failing all of these, the only other thing which someone has said worked for them is to do a factory reset.
