Unreachable hub - C5 / 2.3.9.201

My C5 hub (ver 2.3.9.201) has run fine for years but has stopped working now. Nothing has changed on the network. I have rebooted and changed network cables. Hub cannot be found using any Hubitat diagnostic tools. Paying for annual user account. Very frustrating. Any suggestions?

Also - confirming - there is no reset button on this unit - correct? I do not see one, anywhere on the unit. Only power and ethernet adaptor.

There is. It is on the underside, as indicated in the Hub documentation:

Note that this is a network reset button.

What's the color of the hub's LED? Have you tried a different power supply?

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Thank you - found and reset the button. Booted back up, now green. Still cannot reach it.

Have also run the Advanced Discovery tools at https://findmyhub.hubitat.com/
and nothing is found.

What router do you have? Can you log into your router to find the IP address it has assigned to the hub?

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Somehow it is now back online. Perhaps the reset button did it?
And yes, I know the IP address via my router control panel.
Thanks for your help.

However, it appears that all my automation sequences are gone? Cannot find them.

Please do a soft reset and restore from the last good database saved on your hub. If the one from yesterday doesn't work, try one from a few days ago.

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