why haven't my teachers received their e-mails from the commonapp website?

<p>I put my teachers names, email addressed, ect in the section on the commonapp school forms section and it says that they were invited, but neither of my teachers got their emails. So, i clicked the resend button and the date changed beside their name but they still say that they didn't get the email. This urgent because i'm trying to meet UChicago's EA deadline of Nov 1 and i need the teacher recs to do so. Why isn't it working? Thanks.</p>

<p>did they check their spam filters?</p>

<p>As a test, I invited myself and it took FIVE HOURS for it to reach me.</p>

<p>EDIT: Also, one of my friend's teachers got the notification, but didn't click on it because he thought it was spam. ...</p>