[Deividukz]

Its not working for me,i do /Checkplayer (Name).but it shows only the correct usage

[Lewd Catt]

Use the /Checkplayer correctly, If you try to type the name with space use Quotes then.

example /checkplayer Deividukz (Without Space) or /checkplayer "Lewd Catt" (with quotes if there's a spaces)

[Danny Dog]

but it shows only the correct usage

What do you mean by that?

[Helena]

but it shows only the correct usage

What do you mean by that?

it shows

the correct usage of /checklayer, /checkplayer <name>

that stuff in chat when you use the command in the wrong way