Cipher

If you need help, you can send a message.

Probably. Have you tried using it?
And, be careful on posting to avoid potential spoilers.

I believe there's only one solution per room, though.
And I am not sure what you mean by 'big one'. Unless you're talking about Balthazar's labyrinth of course.

You may send a message if something confuses you.

Go to the first hint, and don't go far away.

Send a message to me if you're still confused.

Send me a message.

If you found the right decoder, pay no attention to the question anymore and solve the gibberish letters with the key.

Good for you. I hope I can help next time. Just send a message, or post in the appropriate thread.

@aki, send a reply to your message.