OmniFocus 2.1.1, iPhone 5S 7.0.4, always requests a password for the sync server, never syncs and continues to ask for the password.
Have deleted the app via iTunes. Restarted, then restored. Same thing.
Opened new Omni Sync account. Problem still there.
Have replaced the sync settings on both the iMac & iPhone.
Changed the password several times.
It’s as if there is an authentication error being generated at either the iPhone end or the OmniSync end.