Update at 21:30: the network fault has been fixed. The fault was caused by a broken core router, which has now been replaced with a new one. Unfortunately, our backup connection did not work properly.

Update at 11:19: We are having a large network fault at our data center. Access to all of our services is breaking up. The data center staff are still investigating the error.

We are very sorry about the error and we are working hard to ensure that we will avoid this kind of fault in the future.