I am trying to change the email address on my dropbox account. I used to have two dropbox accounts but deleted one about 10 days ago. I am now trying to change the email on my second account to the email I used for the other account. Even after 10 days, I am still getting the error "This email address is already taken". When I try to login with that email address, it brings me to the signup page, suggesting that the email is not associated with an account. What do I need to do to be able to use this email address with my dropbox account? Thank you!