Family Account Vault Sharing Not Working

My husband and I signed up for a family account subscription last year (moving from separate 1Password accounts). My husband is the administrator and we both had access to each other's personal vaults. This stopped working for no reason late last week. My husband can now see all vaults (both his, mine and a vault called "Shared"). But I can only see my vault and "Shared". His vault has disappeared from my 1Password app and browser plug-in. When my husband (using the 1Password website) clicks on his name from the "People" page, he can see three vaults (his personal, my personal and a vault called "shared"). When he click on my name, he can only see two vaults (my personal and "shared"). When he goes to the "Vaults" page, he can also only see two vaults (mine and "Shared" but not his). When he click on the Vault Details for his personal vault (accessing it from his name on the "People" page), the top box says "Only you can view and edit items in this vault". But the bottom of the page says "This vault doesn’t have any permissions to edit". We cannot find a way to restore sharing of his personal vault with me. Like I said, this was all working up until late last week and we did not do anything other than authorize a new laptop that I just got for Christmas. Please help us get this fixed quickly. I think it is unfortunate that you don't provide telephone support that can help people resolve issues more easily. It is difficult explaining all of these complex details in a written message.

Mayra

1Password Version: 7.3.712
Extension Version: 4.7.5.90
OS Version: Windows 10 Pro Version 1903
Sync Type: Dropbox