Check to see if there is any $readers fields. If you have an admin client, open the database after clicking on the menu – Administration / Full Access Administration. Then you can open the database and see all documents.
When ever you use readers field always add an author field with the Server group “LotusDomainServers” or the Domino Server names (for the servers that replicate).
Clearing the fields don’t always work since not all servers can see the document to replicate the changes.