"30-day money-back guarantee." You see this. You feel safe. Then you request a refund on day 29. "The guarantee doesn't cover streaming issues." Or "You exceeded our fair usage limit." The guarantee is full of holes.

Same device. Same room. Same subscription. Wi-Fi works perfectly. Plug in an Ethernet cable? Buffering. Or the opposite. How is that possible? Here's the thing: Wi-Fi and Ethernet have d