The present invention provides a method and system for electrolyzer diagnosis based on curve fitting analysis and efficiency optimization. The container includes a pouch defining a cavity to contain the one or more puzzle pieces and including a closure to provide access to the cavity and one or more straps coupled to the pouch to bind the container to the puzzle board. In reply, the recipient can respond with a SMS message that directs the voice mail box to take one or more predetermined directions in relation to the message.