That's complete rubbish.
The app simply does not work. I have the same problem in the UK. Everything set up correctly - but it just keeps going on about network connections when everything else works fine. I suspect it has more to do with a withdrawn app - or a service no longer available. This is happening a lot with Samsung TVs - just like Eurosport! Samsung never bothered to tell anyone or remove it from any updates - they just left it there with the constant 'unable to connect - check your network settings' message, when in fact they had withdrawn the app ages ago!
And for those that simply say reset the TV - I would ignore that advice too - that's very 'Microsoft' support speak - and often, some peoples only answer to everything when they don't know what the problem is. For info I have just reset my TV to factory defaults as I wanted to de-tune my satellite channels - and even after that the app does not work, so ignore reset advice in this case.
Apart from about 5 mainstream apps like Netflix, Amazon, YouTube and a few other Catch up TV services, there is nothing of any real use on these TVs and Samsung are not providing ongoing updates for a lot of their TVs.
Best advice is to get a Roku or other streaming device and use that - at least it gets updated.
