Hi! Welcome to the samsung members community UK/EU
The very first thing to do is provide us the model number.
Is it a second hand model or brought from a legit retailer?
It's likely that the issues with your 2015 Samsung device's browser are due to its age and the fact that it's no longer receiving software updates, including security patches and browser updates. But- strange for it to affect we pages. Could be an internet issue over a tv issue.
Plus- your TV is 10 years old- shocked youve not ran into issues sooner
