Do you know what else the tech checked when he visited? For example did he check your power levels? I'm looking at the network stats and can't find any problems but your upstream power levels look a little bit high.
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As far as I remember he didn't check anything with the hub. He did his checks outside and then inside around the faceplate where the cable comes in. When he saw the hub with yellow light he replaced that. All his checks came back fine so it was a case of see what the replacement hub does. Sadly it hasn't fixed the issue.
Things seem a little strange to me here. I had two outages already this morning. Both times https://www.thinkbroadband.com/ didn't pick up any issue until I rebooted the hub and then, obviously, reported 100% packet loss. This makes it seem like WAN side continues to work but LAN side is dead. Anyone seen this before?