[Scenario]

You are showing dregister6 when the dregister5 response is called- no matter if the response was 0 or 1. So...

pawn Код:

ShowPlayerDialog(playerid, dregister6, DIALOG_STYLE_LIST, "Which fighting style you would like to learn?", "Normal\nBoxing\nKungFu\nKnee Head\nGrab Kick\nElbow ", "Purchase", "Cancel");

Should be:

pawn Код:

else ShowPlayerDialog(playerid, dregister6, DIALOG_STYLE_LIST, "Which fighting style you would like to learn?", "Normal\nBoxing\nKungFu\nKnee Head\nGrab Kick\nElbow ", "Purchase", "Cancel");