I seem to be experiencing exactly the same issue as @shellyb123 in the following post after inadvertently manually deleting my 1Password data from iCloud:
At the end of the linked thread @megan indicated that Andrew had emailed the OP with a possible fix for the problem. Would you mind please sharing the solution?
1Password Version: 5.3
Extension Version: 4.4.3
OS Version: 10.10.5
Sync Type: iCloud