The dropbox app won't let me login on the iPad app, it keeps giving me the message "login failed" even though the credentials are 100% accurate.
Also, for every four or five tries I do, it takes me to a page with a captcha and asks me to verify. The captchas are mostly illegible, but when I finally do find one I can read I type it in and click verify only to have the app kick me out to the sign in screen and give me that same "login failed" message.
Note: my iPad iOS and dropbox app are both completely up to date.