Can Somone explain to me how to get mystery dust?

[Lavandu]

I opened a crate in the /mb and said I already got this prize, so it gave me less than what I was suppose to (was god apples) and said I gained 10 mystery dust. when I /mb again it says I have 0 mystery dust.

Also, to make crates it says I need 0 mystery dust, I have 0 and it wont let me create it. can someone help?

 

[Pikachu22]

This was a typo. None should get dust at all. Has been fixed, thanks!