Cannot Access Admin Page

Hi All, 

Model RN10400

Firmware Version 6.6.0

Had an issue where the the Ready NAS had a spin draw +4 error on the screen (sorry can't remeber the full dispaly that was on the screen).  Wasn't able to access the readynas via web gui, saying it was un responsive.

Hard rebooted by pulling power cable from the back. 

Device booted up ok and could see all the devices.  However I am now unable to access the admin page and plex isn't working.

If I click on manage my device and then admin it comes up with the message - 

The admin page can only be accessed on local network. If you believe you are on the local network then try the following ip address 192.168.1.65

When I click on the IP Address link it says - 

This site can’t be reached

192.168.1.65 refused to connect.

The IP is the same one that is showing on the Ready Nas display.  

It is also the one showing in the router connected devices,

I can ping the IP address with no issues,

C:\Users\couls>ping 192.168.1.65

Pinging 192.168.1.65 with 32 bytes of data
Reply from 192.168.1.65: bytes=32 time<1ms TTL=64
Reply from 192.168.1.65: bytes=32 time<1ms TTL=64
Reply from 192.168.1.65: bytes=32 time<1ms TTL=64
Reply from 192.168.1.65: bytes=32 time<1ms TTL=64

Ping statistics for 192.168.1.65:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms

C:\Users\couls>

The setup is Router, Powerline device,  Switch - PC, Readynas,  CCTV

The PC has full connectivity so does the CCTV.  I can get to the ReadyNAS, all the disks are there and can view all the files on them, just cannot connect to the readynas ip address or admin page.

Any help would be appreciated.