Hi all, I have been following the thread for a little while and wanted to add my experiences so far.
I have been able to add the HUB using the Singapore server, but as with all the other "new" servers, it does not load the gateway's interface. I keep getting the same error message as most of you have been experiencing. I have been able to add several of the Xiaomi child devices (Mi switch and sensors) and could set up Automation scenes. (Although it is quite limited, as you can not set up the home alarm triggers for example, because you will need to get in the interface.)
The Aqara devices currently don't show up in the devices list on these servers, however, I was thinking it may be possible to add the Aqara child devices through the HUB's interface? Well.. I obviously can't try that out as I can't access it.
Another reason for it not functioning, I though of, could perhaps be because the firmware on my gateway is newer than the Singapore server is expecting? (I had that installed with the latest firmware on China mainland recently...)
I also do think Xiaomi is just experimenting with these new servers, possibly for upcoming international rollouts. (As I do see the smart plugs on those servers having new connectors, for example.) This might be an indication that Xiaomi is just giving a handful of test users in those areas access to the devices? (Not entirely sure though, but it could mean those devices will get supported when the products will launch in these territories?)
*To back that, you can't buy the smart home set, or gateway, in Singapore through Xiaomi right now. Could that indicate that they might, soon....?
I will keep following this thread, and will continue to do some experiments with these servers on my end as well.