Subscription or login issue- I have a paid subscription for dropbox. But out of the blue when I tried to login with the same email address as always, it prompted me to sign up. I have been a paying member for several years, but I went ahead and finished the prompts and signed up. Now, when I login, my dropbox has zero folders on it. They are all gone. I am still paying for the membership with no access to my files. Please help.