My dropbox is full. A photographer tried to send a file of pictures to my dropbox but I can't access them because my account is full. I haven't used/cleaned out my dropbox in years and my Mac just automatically uploads everything to dropbox so no telling what's in there. I would like to contact customer support but when I try to go to my account I can't even get past the pop up that says upgrade for a fee! No way to even clear out my dropbox to make room for anything if I wanted to because the pop up won't let me move forward until I purchase the upgrade. I would like to know how to email customer service but since I can't get past the pop up I have no idea how to get to the email address for customer support. Please help! I have the free service.