Our WiFi is suddenly, on every device, telling us to "sign in to WiFi network" which first of all makes no sense. We're not a business or something and we've never had to sign in before. When we do click sign in it asks if we're a new customer or existing When we click existing it then says "webpage not available"
Can you provide a bit more information? Your modem should require a login and password to access the network. Usually, your device remembers this login, and automatically reconnects each time you arrive home.
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