Help! IPhone app won't synch with my vocab list.

My son is laughing at me because I bought an IPhone just to have Chinesepod with me at all times and now I can't get my Chinesepod vocabualry list to synch with the IPhone review application.  I have thousands of words in my vocabulary list, but my IPhone application shows none.  Any suggestions on what I am doing wrong?  Thanks.