When there is an error in naming in the blue protocol, players can first change their name to solve the problem. If it doesn't work, it may be because the system is under maintenance and just wait.
May be due to maintenance
As long as the names are not repeated, it may be due to system maintenance.
If the name is repeated, you need to select the name again, which can also solve this problem.
When encountering this situation, players can first try to change their name to solve the problem.
If it doesn't work, wait until the system is maintained and you can use it normally.