RBR50 Connection Problem with iPhone

I tried to install the latest firmware update to my RBR50 router through the Orbi App on my iphone. The app tells me that I am not connected to the router even though I am using the wifi network provided by the router.  I followed the help suggestions and turned off my two satellites but that didn't help. I tried the "connect remotely" option from the App  and was told that the router is not on line.  It has to be online beause I still have my wifi network throughout thehouse and internet connction is good.  My router is equipped with the BitDefender option; I don't know if that has an impact.  So, in summary my wifi network is working well I just can't access my RBR50 to update the firmware.