I've seen others post about this.
If I create a new login it is not synced to my other devices. So if I create a new login on my iPad Pro, I then can't see this on my iMac or iPhone 6.
I read one of you support options was to look within Dropbox in the 1 password folder and then in the default and data folders to see what date the latest file was. Mine was 2 days ago. I created a new login as it suggested and then checked the folder again. The latest file was still the same, 2 days ago which suggests the issue is within the 1password app, not Dropbox. I've checked that all my 1 password apps are pointing to the same Dropbox file which they are and I've checked and syncing is on through everything.