Duo v1 no longer discovered

Advice sought please:

Duo v1
RAIDar 6.2 and 6.3
RAIDiator 4.1.16

Windows 7 PC & Mac OSX "El Capitan", LG smart TV

No changes in configurations performed recently.

RAIDar (versions 6.2 and 6.3) reports "RAIDar could not find any NETGEAR storage on your network. Check that your storage device is powered on and connected correctly. For more help, visit http://my.netgear.com." (Yes, I've checked that)

My NAS does not show up in MS File Explorer

Connecting to NAS via browser (Opera and Chrome) I am not landing on the Frontview page, instead being directed to the two shares I have created and I can access the folders witin those two shares. Other shares are not shown.

NAS is not discovered by LG Smart TV (2017 model)

All this used to work perfectly, and as late as a couple of days ago, when I watched a movie off the NAS.

As of time of writing; Acessing the NAS via my Android tablet and the Total Commander app, Works as normal. I can see all shares and access the content.

Also, my audio files residing on one of my shares are accessible and can be streamed to my Hi-Fi, controlled by an app on my Android tablet.

However I am not able to connect to it via an Android App called NAS Utils.

So, it seems that the part of my NAS that broadcasts it's prescence to compatible devices has gone unserviceable?

Any ideas, suggestions would be very much appreciated. TIA.