printing my certificate without a platoon number

Hello, I have completed my AFTB Level 1 training and would like to print my certificate and email it in but that requires my son's platoon number, which I have not received.  I obtained his correct address, less that information but would like to participate in the challenge questions and send in the cert. both requiring that number.  I read that my soldier is the one to give me that information, however, I also read it could be a long time till I hear from him.  Any suggestions?  I have written to request the information and am waiting.  However, as I am learning the ways of the Army, if there is something I am needing to do in the mean time, please inform me as to my next action.  Thank You   

Thank you I just received my answer through the fantastic FaceBook group photo!  Go Delta 1st!