Follow these steps to change your Minecraft server into creative mode:
Log into our server control panel.
Click 'Manage' to open your server.
In the console input field type: gamemode creative playername replacing the word playername with the Minecraft username
Note: the player must be on the server for the command to work.
Hit enter to send the command to the server
To change yourself back to survival type: gamemode survival playername
You can also use the op playername command in order to give yourself operator status on the server so you can change your gamemode in the game
More server commands can be found here.
Updated on: 27 / 01 / 2022