There is data in the SD-WAN Tunnel (Card) and the Geo Map (Tunnels) but No data in the SD-WAN Tunnel (Time Bar).
If I select a site from the Geo Map screen then it populates the SD-WAN Tunnel (Time Bar) with the data for the site selected.
In the left hand corner of the view we see "you no longer have access to report item in view"
Dx Netops Virtual Network Assurance
Edit the view and at the bottom of the page click the "Use Defaults" button. This will revert any custom changes applied to the view column settings