Hi @Anonymous User,
Sorry to hear you're having problems. First things first: -
Sufficed to say, the more detailed information you are able to provide, the easier it will be for us NOW TV forum members and/or a NOW TV Team member to work out a solution for you!
Hi again @Anonymous User,
According to LG's web site, the newest software for you LG television is v04.62.12 released 12 Dec 2016. Is this what you have installed?
If your problems persist, much as I hate to say it, it sounds like you'll have to perform a 'factory reset' (which can be found via the 'Option' setting).
I have to do it every-so often on my LG TV's when they become unstable. Which usually occurs after a couple of software updates!
Sufficed to say, a factory reset means you'll have to re-tune all your TV channels and you'll loose all your pre-sets. So make a note of them before you give it a go!