Login Error and World Error

 

(※ I translated Korean into English.)

I started beta tester a few months ago and played games in a few months, but there was a problem.

I got a login error and it became impossible to enter all my worlds without logging in. There is a world that is unknown in the picture but disappeared without a trace.

I tried to create a new world, but it was impossible to create a new one.

World copy was also not possible.

Because the beta version is unstable, I saw a notice telling me to make a world copy, but the copy was already missing.

Is there a way to solve these errors?

I can't play the game because of an error.