Drobo 5N unavailable or offline



The connection to my Drobo 5N is very unreliable using Plex and I keep getting a message on both the Xbox and PS4 that the Drobo is offline or unreachable. The problem is, it isn't. I can connect to the Drobo (wirelessly and through a wired connection) from my laptop and through another app using my ipad and iPhone. This is pretty frustrating as I have not changed any configuration and sometimes this works and sometimes it doesn't. There seems to be no rhyme or reason behind it? Any suggestions welcome.