Cheat active by name didnt work

[quang.billy.79]

I change my name to the name activator in war3map.j but when game started i got disconect immidiately
I also notice that when i change name in war3, other people still see my Garena name not my changed name, but if it isnt cheated name i'll be ok
Is there anyway to fix this?
Oh here is the map and the name activator is nhuthuan7541204

[devoltz]

U cant play with a different name in garena.

[quang.billy.79]

U cant play with a different name in garena.

Uhm its so sad (. But why? when i entered the game it said cheat activated but then i got disconect immidiately. Cant understand.
And i can see my name changed in game, but i think people dont