Reset tv to default settings. Download the “SmartThings” app and follow the prompts.
I had everything done in 10 minutes.
I solved this by using my mobile phone as a hotspot and logging the tv in to that instead of the home wifi.
Once terms and conditions had downloaded and been accepted i switched back to the home wifi network and everything worked fine after that. So somehow the Terms and Conditons download was being blocked by the home wifi network!