I've had this problem before and I lost a good amount of data.
For reference: https://discussions.agilebits.com/discussion/24194/lag-between-windows-password-update-and-ios-using-dropbox-or-is-it-just-broken#latest
I run 1Password on Windows and on iOS. Somehow I let my Windows app get really old and it's on version 4.6. The auto update stopped working and I lost track of all further updates. I /think/ it is still successfully backing up to Dropbox, to files located in: \Dropbox\1Password.agilekeychain\data\default
On iOS, I am running the most up-to-date version (7.2.5)
Back in 2014 (see my linked post), I complained that 1 Password didn't tell me when it was failing to sync.
Well 4 years later and it has been failing to sync for who-knows how long. Silently. Again.
On iOS, I go to Settings > Vaults > Primary. My Sync Service is set to "Dropbox" and I have a message: "Failed to upload file to Dropbox" Pressing "Sync Now" just leads to the same message. Same for "Try Again". The error message contains a path that is very long, I can take a screenshot if it will help.
The problem might be that "Last Sync" says that it's either in progress or a few seconds ago. If there IS some system in place to check for Sync failures, it MIGHT be getting fooled by this status message.
So now I have 2 iOS devices and a Windows device. My guess is that 1Password on iOS is saving my passwords locally?
I need two things:
1) a way to save my data from each iOS device
2) a way to combine the data (or at least find differences) so I can have a single vault
3) a way to make sure this doesn't happen a THIRD time.
I was looking at upgrading to version 7 today. I understand that storing to the 1Password.com account is your recommended procedure now, but some of us paranoid folks would rather the data exist in a non-centralized location for attack.
1Password Version: 4.6.2
Extension Version: Not Provided
OS Version: Windows 10 64bit
Sync Type: Not Provided