OS 6.5.1 on RN316: Unable to modify many settings

UPDATE TWO: ISSUE "B": Network Time - After the factory reset of Unit 2, I discovered that the only way to change the NTP servers was to configure the NAS for DNS.  In my case, I used Google's public DNS servers (main 8.8.8.8 IPv4, and secondary 8.8.4.4 IPv4).  This was true regardless of if I entered in the IP address of the NTP server or not.  Essentially, no DNS configured and it would not allow changes to the NTP servers (that's to say, they would revert to the default Netgear servers). In this respect, I was able to get Unit 2 to configure for my chosen NTP servers, and to allow for the configuration of server 3.  As to Unit 1, it would not allow for the re-enabling of NTP.  If I checked the box, and put in an NTP server, whether I pressed <Enter> or clicked "Apply", the GUI would return to the Overview window, the time would remain unchanged (out-of-sync), and upon reentry into the "set time" window, the box for using internet NTP would have reverted to unchecked and any/all entries for server would be blank. So, effectively Unit 2 NTP RESOLVED; Unit 1 remains UNRESOLVED, I may try the factory reset option here as well (with Unit 1), after Unit 2 is fuly online with all data sync'd.