[APP] Aqara & Xiaomi Smart Home - Simplify your life with a smarter home

So I just started to go into this smart house hobby. Saw a few post about Xiaomi/aqara and followed that road.

I got a Xiaomi hub from China and was told to connect to “Mainland China”. Well I can only find “China” not Mainland and when I connect to China I’m told to check my network, anyone know what I’m doing wrong?

The product I want to connect to my EU hub is Xiamoi power and a fire alarm.
When. I try to connect the power hub from EU servers the hub say "child device connected’ but is don’t show up on my device list