Can't access shares

Hi All,

I've had a reasonably lengthy search over the internet and couldn't solve my issue. I have had this readyNas NV+ V2 for several years now. The only problems I've had prior to this was that it would stall transferring large volume photos to it and needed a reboot but I lived with it. Initially it had 2x 2TB drives in it and I added another when they grew to capacity. It worked fine for some time but now I can't seem to access my shared drives. Admittedly I'm a low level home user, not in IT but I am capable of following technical instructions.

From Raidar I click "Browse" which shows me my shared folders via Win explorer. When I try to access a shared folder it asks for credentials but gives me an error Windows cannot access \\192.168.1.xxx\[sharedFolder]. Picture attached. I can log into the home page with admin credentials and thats what I used to do to access my shares.

- I tried an OS reinstall as suggested in another thread that seemed to have similar issue to mine, but no improvement afterwards.
- Raidar says firmware is 5.3.13 and Status: Healthy
- I can access the dashboard which gives my the temp and fan speed as well as the bays which are loaded but the Configure > Overview > Hardware section doesn't load Model, Serial, Firmware info;
- I don't know what firmware I'm running as per above. If necessary, any other way to find out?
- Network DNS setting is DNS1: 192.168.0.xxx but the IP address is 192.168.1.xxx. Not sure if relevant but I couldn't figure out how to change it.
- From the webpage I navigate to Shares > Create a New Share > call it "test" but it fails giving me a "The share name you entered contains invalid characters". I don't understand this as it's all alpha-numeric name. Can't seem to get past this.
- Using Windows 10 pro, workgroup name is identical.
- The systems log shows some errors and I've downloaded the logs but there's probably too many files to attach here but if they're useful I'll host them somewhere:
-- Red dot: "Unable to access source path /[shareName]. [Job xxxxxNAS Backup 20160126]. I guess its a failure to backup one of my shares probably because it's not accessible?
-- Green dot: "The paths for the shares listed below could not be found. Typically, this occurs when the ReadyNAS is unable to access the data volume" > then lists all my shares
- There are no add-ons.

Hope this is in the right section. I'm happy to work through any other suggestions available to retrieve my data.

Regards,
Patrick.