Roy wants to know why cell phones don't suffer congestion like WIFi does? Leo says that Leo says it's mostly by design. WiFi uses a technology that causes traffic to wait because of congestion. But in cellular technology, they don't avoid traffic collisions. It uses multiple channels on a cell tower to manage the traffic. Here's an article about it.
Ken has an Eero mesh router, but he's concerned because he has several "internet of things" devices and he hears that mesh routers don't like them. Leo says that is the current problem, and it may be that the devices aren't smart enough to handle the mesh way of handling the network. They're working on it and Leo says that a fix will some sooner or later. But in the meantime, hardwiring to the router may be the best solution.
Mass can't get Wi-Fi on his PC. It's about three years old and he hasn't used it in awhile. Leo says it may be that the computer needs to reacquire the network and password. If he can, he should choose to "forget the network" and then reboot. It will then see the network again and he can input his password.