Connected no internet
we have a Archer C50 with 5 access points hard wired, various devices at different times, say 'connected no internet', i have cleared cache on my phone and mac, but my TV is also doing it, sometimes it fine and other times i just have to wait til it reconnects, sometimes does if i turn of the router and restart. i used to have a problem with Sky box, but that has been sorted, by sky engineer getting a 'static' signal. Alexa devices all work but they are predominately new! can anyone help, i feel sure it is a router problem as all other devices work outside the home.