Unable to Access v5.0.13 DB Secret

We’re encountering issues pulling PSCredential objects from the PSU vault-type database. Specifically, when testing in a script running under an admin account, the $userName = $Secret:Cred.UserName variable returns empty.

We’ve also tested adding Connect-PSUServer -AppToken, but it hasn’t made a difference. The appsettings.json file is configured with Data Source=.

Any assistance would be greatly appreciated.