I'm not sure if this is the rigth thread.
Me and VideoShoot agreed to duel for 3k better to 3, i have the screen shoots that prove what i said.

The /duel command was not used, nothing will be done.

Also wrong section, This would be posted in the Scam-reports forum.

How can i use the duel command to do 3 rounds?

You can't.

Then how im suposed to have the mod command activated?

/duel 3k

Then you play and if you lose he gets the tc

But then is just one round not three rounds.

You can't do three rounds it defeats the purpose of having the duel command.

As Boonana has stated above, because the /duel command has not been used, you will not be refunded.
You cannot use the /duel command for over 1 round.