Minecraft OP (Operator) status gives a player full access to all commands and permissions on a Minecraft server. By default, there are no Minecraft server operators on your server.
To "OP" yourself or others on a Minecraft: Java Edition Server:
1. Login to your server's control panel and select your Minecraft server.
2. On the left-hand side of your control panel click "Console".
3. In your console, type "op <username>".
Replace <username> with the Minecraft username of the player you wish to OP. As an example, we would type "op MCProHosting", without the quotation marks.
When entering in commands to your server's console, do not include a / before the command. By default, the console will already add an invisible / before the command.
4. Press the "Send" button located to the right of your console or press the "Enter" key on your keyboard to enter in that command.
You will receive a response similar to "[Server] INFO CONSOLE: Opped MCProHosting"