Issue with Disposition Review

Question

I have set up and published a retention label, labeled records, and given roles to reviewers. However, although I receive emails notifying me of items that have reached the end of their retention period, there are no items showing on the Disposition page. Can someone please help me troubleshoot this issue?

Here is an example of the notification email:

And this is what the Disposition pane looks like:

Reviewers already have the following roles:

• Disposition Management
• Content Explorer Content Viewer
• Content Explorer List Viewer