Hello, this would be caused by an incomplete connection to the game's servers. This is most likely not caused by any issue on your end. I would suggest clearing client cache, flushing DNS cache, then restarting your PC. If the issue still persists, then there is likely an issue lying between your PC and the game's servers, which is of no fault of your own. I would suggest trying to login via a VPN, which would likely require using most, if not all, of the available servers.

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.