openHabCloud always offline

Hi… I can not understand why my Openhab cloud is always offline…
This is my Java version…

java version “1.8.0_191”
Java™ SE Runtime Environment (build 1.8.0_191-b12)
Java HotSpot™ Client VM (build 25.191-b12, mixed mode, sharing)

What should I check?

Thank you

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