@khourj, good morning. Sorry to hear that you’re having connectivity issues to your root BES server. Assuming this is a Windows server, so please correct me if incorrect.
Have you checked the status of the BES diagnostic tool as shown in the screenshot below?
If no, please execute and post results here. Also, do you see any error messages in the BESRelay.log or FillDB.log files on the root BES server? Details on log file locations can be found HERE.