Internet was working fine till yesterday, my sibling started a download on Steam, after that all devices started experiencing connectivity problems. The only way to use the internet was to be connected directly to the modem. There is no ISP outage. Modem says there is no upstream or downstream problem, but after a few minutes of being connected to a router, it says its having trouble establishing a connection to the router. Tried 3 different routers, at first the SSID pops up and you can connect but then internet stops working and devices automatically disconnect and attempt to reconnect.