we are using Governance dashboard 2.0.1 , which was working correctly. But since we have upgraded from qv 12.0 SR2 to QV 12.1 SR8 it has stopped working. Its not showing any data, and no there is no error on reload.
Maybe you can try an upgrade of the Governance Dashboard as well? GD is at v2.0.4 now. Some tricky bugs have been fixed. You might want to check your configuration settings and include a few additional DateTime format settings.