Help! How fix ban in Sword Art Online Alicization Rising Star

[RyukyRizky]

I finished the mission from the event and after that a few days later I can't go back into the game and get 'server error 403' but my internet connection is good it looks like I got banned, how do I fix it?

 

[Palco]

Its probably server down

 

[FAHAD GAMING]

Awsome