Please email us your logs, so we can see what's going on. To do this, open 1Password on the iOS devices and go to Settings > Advanced > Troubleshooting > Email Diagnostics.
Henry, I got your logs and are looking through it.
done it (jyst sent logs) but for me the issue (don't know if it's the some of other beta tester) is still there.
It's really frustating, i've also deselect/enable again dropbox sync with no success, the sync issue is still there.
It's fixed in b5 for me too. I guess I don't need to send my logs :-) (sorry for the delayed reply, but the new discussion server wasn't showing me the beta discussions at first, and wasn't sending me notifications for replies either :-\ ).