Your SWFS aren't linked correctly, as if you can tell, many other images are not showing as well, so it has to be your swf links, also you probably don't have the furniture icons if furniture icons aren't showing. As for the Wired furniture, does your database have the table called wired_items...
Only users with room rights can see it is the problem, if you want to make it so anyone can see it, locate this in InteractorSwitch.cs
bool HasRights
Replace it with
bool none
Should fix your problem.
Yeah, you could add this line
RoomUser User = Room.GetRoomUserManager().GetRoomUserByHabbo(Session.GetHabbo().Id);
Then use something like this instead of your whisper alert.
Room.SendMessage(new ChatComposer(User.VirtualId, "*SLOT MACHINE: " + SlotCard1 + " " + SlotCard2 + " " + SlotCard3 + "...
If there is no save function, then the wired item is broken. Why would you add additional of wired items that wouldn't work regardless? I said you can only have one setting per room, meaning the setting you set will be the same for every single one in your room.
Not to include, that WIRED condition is actually broken, you can only use one per room, because it sets every single one you place in the room to the same value, and even when you change it, it'll be the same setting as the other.
White client usually means that the Habbo.swf you're using in client.php does not exist in your production folder. Try visiting, (yourswfroot)/gordon/(production)/Habbo.swf, and if that returns 404, then you don't have a swf in there.
Be more specific on what you want help with mate, this is pretty vague. I believe this is the wrong section if you're looking for a developer as well. @JMG
If it shows that a user is online in the console, it's your SWF version. Your Habbo.swf and packets don't match. Make sure they're the same production.