Samsung TV will not keep Wifi connected for more than a day
Have a 2016 Samsung smart tv. Upgraded to att Fiber 100 about 6 weeks ago. ATT gave me a new router. Have uverse TV boxes that work just fine. Can not pin it down to an exact date that this started, sometime in the last 3-4 months. TV will not connect and/or stay connected to wifi automatically, Have powered down TV and router many times, manually changed setting on TV multiple times, eventually get connected, but then lasts maybe a day. TV will not remember the wifi password. Have gone through Costco (where I bought it) customer support, and they ran me through all the steps I already have done, then got switched to extended warranty company, went through same steps again, then was transferred to Samsung support, and repeated all the usual steps. No answers. Got connected yesterday AM, today upon turning tv on- no connection. Samsung ended the session by saying nothing wrong with wireless card since it sees my network. Said contact my isp provider- said something going on there. Any suggestions?