Hello, based upon the testing that we have done, it would appear as if there is a server down located close to the game's server. I would suggest contacting your ISP and asking them if there is a way to correct the error, or using a VPN to login, which will likely require using most or all of the servers available within the VPN to bypass the issue.

From discussing it with different users, and different ISPs, and from what has helped them, it appears as if this outage has been caused by the volcanic eruption, which has caused a large amount of issues with certain servers, and the only way to bypass it is to find a VPN and a VPN server that allows you to bypass the servers that are down. However, the servers are diligently trying to correct issues and are doing so as quickly as they can.