@Jasminchopra I do believe they still have that on their portal here at <a href="https://walmartoneme.com/" target="_self"><span style="color:#000000">Walmartoneme.com</span></a>.

@Tony Thanks for the solution and explanation as well. Strange that I paid cash to the technician and even he can't figure out what happened. Thanks again, man.

@JohnK_SF That happened to me earlier this month. But not on the same hardware version. Anyways, I searched for many solutions on the net and tried hard resetting the router just in case. And guess...