I'm sorry to inform that we had another power outage at our new datacenter (we migrated to another data center after the last incident). Because of it, our service was unavailable from 22:56 to 23:55:30 July 18, UTC time.
The service has been working fine since then.
I'm still working on our server clusters to prevent this from happening again.
Sorry for the inconvenience that caused.
If you encounter any problem with our service, just let me know.