View Single Post
It appears that the user name and password that OmniFocus for iPhone uses can get stuck on a particular value. If you enter a typo or if your login information for your sync server changes, OmniFocus gets stuck using the bad information. I suspect that's what's happening here.

If I remember correctly, 1.1 prompts you for another user name and password, but for the time being, we'll work around the problem by doing the following:
In OmniFocus' settings screen, scroll down to the sync settings.
Tap "advanced", then enter "http://demo.omnigroup.com" into the "Location" field.
Tap 'done', then tap the sync button.

Your phone will attempt to contact our server for a sync; we'll prompt the phone to ask you for a new login and password.

Type in random gibberish for the user name and password - the point here is that we want our server to send you a 'bad password' response. (Do not type in the user name and password of the *account you're actually trying to sync with; we could read that data.)

In any case, when the password sheet comes down a second time, tap 'cancel'.
Switch the sync settings back to their normal values and start a sync.

You will be asked for the user name and password; you can now enter the new info you want OmniFocus to use.

Does that get you back up and syncing?