When accessing the Tally application on devices in the local network behind the firewall, latency or errors are faced.
On disabling CFS, the application works seamlessly.
This release includes significant user interface changes and many new features that differ from SonicOS 6.5 and earlier firmware. The resolution below applies to customers using SonicOS 7.X and 8.X.
As initial troubleshooting, Content Filter was disabled and Tally is working correctly.
Then, the next steps are:

This release includes significant user interface changes and many new features that are different from the SonicOS 6.2 and earlier firmware.
The below resolution is for customers using SonicOS 6.5 firmware.