It was clearly your brother and you did something wrong using those accounts and tried to use alternative accounts to go back in game to play so the ip that you guys were using was banned in order to stop you two from using other acocunts to join in the game.
Internal Server Error happens on some spots of the server. I got that error when i was in a mine,then after i quickly log in and did /t spawn. After i changed spots,the error never appeared anymore.
Vote down.
You were swearing,using caps and spamming. I told you to stop and you didn’t,you deserve the ban. You also insulted the owner and the server.