I can’t answer that. I just gave him a heads up that you’re going to be waiting for him and he said that he’s not going to be here. (And resigning from what- the Coffee Room or the game of chess?)
He’s also suspicious about you having the email address from the coded post. To prove that you cracked the code would you be able to provide the product of the first digit of the public key used to encrypt the message, the first digit of the private key used to decrypt the message and the number corresponding to the first letter of the email address in the message.