[Patrick]

I have no idea why you use # you're probably old school scripter , try this code, this could work (atleast try :P )

pawn Код:

mysql_function_query(Connect, Str, false, "", ""); //used "" instead of #

Or

You could simply INSERT the password, all rows will be assigned as null [b]Automatically

pawn Код:

new 
    Str[256], Nome[24];
GetPlayerName(playerid,Nome, sizeof(Nome));
format(Str, sizeof(str), "INSERT INTO `contas` (`Nome`, `Key`) VALUES ('%s', '%s')", Nome, password);
mysql_function_query(Connect, Str, false, "", "");

EDIT: @Konstantinos never knew about that , atleast I learnt something new , cheers mate