[Konstantinos]

Except the missing semicolon (which was my mistake) the other is yours.

pawn Код:

if( !IsPlayerConnected( i ) || if( IsPlayerAdmin( i )) continue;

You cannot use another if before you close it. So you want to send the message to only RCON admins, right?

Change to:

pawn Код:

if( !IsPlayerConnected( i ) || !IsPlayerAdmin( i ) ) continue;
// If the player is not connected or not an RCON admin, skip it and go to the next player.

Also like the guys above said, add the semicolon!