Thanks for the replies.
I have rebooted everything numerous times, to no avail. Modem and router are running correctly.
I'm running tcp/ip in cumulus and have the correct ip address listed. As I said, it does connct to the router, but not cumulus.
If the usb hub was bad it should not stop the meteobridge frrom connecting to cumulus or weather underground, correct? It would show no data.
It does change ip address each time. I must change it in cumulus when it happens.
Am I missing something?