Mailbox App Access Revoked
I've been using Mailbox app from Dropbox for a few weeks without any problems when suddenly today I got a message saying Access Revoked.
I tried to add my icloud account back to the app but keep getting a message saying 'Failed to Authorize. The information you entered was rejected by your email provder'.
The native Mail app works fine and I can login to icloud on the web.
I thought maybe Apple had detected suspicious activity on my account and blocked 3rd party apps. I reset my Apple password, deleted the app and reinstalled it but have the same problem.
I'm on ios 7.0.4 on iphone 5S and iPad retina.
Anyone have any ideas what could be the problem?
Thanks
iPhone 5s, iOS 7.0.4, 32Gb, Black, EE