TMG recurring reports are empty after moving firewall and webproxy loging o centeralized SQL server

I have moved firewall and web proxy logging to Centralized SQL server. after that recurring reports are showing empty data.

I followed the following Article to move the logging to different SQL server

Configure Remote SQL Server Logging for Forefront Threat Management Gateway (TMG) 2010

the TMG is up to date and SQL server is SQL 2012 SP1 on Windows 2K12

Please advise



Mashhour Faraj