go to: "Sea of Craft\Sea Of Craft_Data\Plugins\x86_64" open the "tenoke.ini" with a text editor of your choice edit the user name in line 6 (user = "new username here") try connecting again, if noone else with the same name is already logged in you're good to go, otherwise choose a different name and try again
open the "tenoke.ini" with a text editor of your choice
edit the user name in line 6 (user = "new username here")
try connecting again, if noone else with the same name is already logged in you're good to go, otherwise choose a different name and try again