Mailing Recommendations and Reports

<p>My school has been having technical difficulties with the Common App due to a recent switch in the Counseling office adding Naviance to our school. In addition, I am to receive a letter of recommendation from my local Congressman that will most likely be mailed or faxed rather than submitted online. I am wondering if there is anything that I need to do to make sure that these materials are successfully matched up to my application. I know that there is the Common App ID (CAID) at the top of the Common App, is that appropriate to put at the top of the materials so that they get connected to my application? Or maybe birthdate or name in the top right corner or SOMETHING. I am just nervous that my materials will be mailed and won't ever make it to my application, and I can't seem to find any detailed instructions.</p>