Failed to create directory

I have had my ex2 for quite some time now and all of a sudden when I go to create a new folder under one of my current shares it gives me an error message  “Failed to create directory”

I have gone as far as restoring the factory settings to no avail.  Please help

I have also gone back and completed the set up and when it gets to the section where it is cheching to see if everything is ok it says “there Seems To Be A Problem” “We’ve detected that you may not be able to: Copy files to or from the device”

Welcome to the Community.

This behavior is not normal. Have you run a diagnostic test in case the RAID volume is degraded and affecting share creation?