Mutiteck Gateway offline

I have a Multiteck gateway configured on V3 - working 100% for 5 months.

It is on my home network, I can log into to it locally, all looks good.

BUT

Went offline last week - Logged into it and “Soft restarted” it, cold restarted it (power down wait 5 min and turn on)

The Gateway is still down although I can log in via the local network.

Any ideas will be appreciated.