First time. The problem is still here. My devices related to the gateway disappeared from the app.
Edit a few minutes later I readded the gateway and it is working back to normal. (there was an update on xiaomi home with some message to agree with)
Hi guys, my Mi control Hub(China) went offline in France tonight so I guess this is still happening.
It looks connected to my xiaomi china router that works fine but no response from Chinese server.