Unable to NFS mount LG NAS

I've got an old LG-NAS  (L2B2 or similar) that works fine with Windows and MacOS but I cannot mount on unRAID 6.8.3.    When going thru the GUI, it just does nothing when I try to mount it.  No logs, nothing so I opened up a shell window.

When I try to mount from the command line, I get:

root@Neptune:/mnt/remotes# mount -t nfs LG-NAS:/volume1_public /mnt/remotes/LG-NAS
mount.nfs: requested NFS version or transport protocol is not supported

So, I tried nfs version 3... same thing.

root@Neptune:/mnt/remotes# mount -vvvv -t nfs -o vers=3 LG-NAS:/volume1_public /mnt/remotes/LG-NAS
mount.nfs: timeout set for Thu Mar  4 09:15:53 2021
mount.nfs: trying text-based options 'vers=3,addr=10.0.0.13'
mount.nfs: prog 100003, trying vers=3, prot=6
mount.nfs: portmap query retrying: RPC: Program not registered
mount.nfs: prog 100003, trying vers=3, prot=17
mount.nfs: portmap query failed: RPC: Program not registered
mount.nfs: trying text-based options 'vers=3,addr=10.0.0.13'
mount.nfs: prog 100003, trying vers=3, prot=6
mount.nfs: portmap query retrying: RPC: Program not registered
mount.nfs: prog 100003, trying vers=3, prot=17
mount.nfs: portmap query failed: RPC: Program not registered
mount.nfs: trying text-based options 'vers=3,addr=10.0.0.13'
mount.nfs: prog 100003, trying vers=3, prot=6
mount.nfs: portmap query retrying: RPC: Program not registered
mount.nfs: prog 100003, trying vers=3, prot=17
mount.nfs: portmap query failed: RPC: Program not registered
mount.nfs: requested NFS version or transport protocol is not supported

root@Neptune:/# rpcinfo 10.0.0.13
   program version netid     address                service    owner
    100000    2    tcp       0.0.0.0.0.111          portmapper unknown
    100000    2    udp       0.0.0.0.0.111          portmapper unknown

I tried to mount with nfs version 2...

root@Neptune:/# mount -vvvv -t nfs -o nfsvers=2 LG-NAS:/volume1_public /mnt/remotes/LG-NAS
mount.nfs: timeout set for Thu Mar  4 09:33:32 2021
mount.nfs: trying text-based options 'nfsvers=2,addr=10.0.0.13'
mount.nfs: prog 100003, trying vers=2, prot=6
mount.nfs: portmap query retrying: RPC: Program not registered
mount.nfs: prog 100003, trying vers=2, prot=17
mount.nfs: portmap query failed: RPC: Program not registered
mount.nfs: trying text-based options 'nfsvers=2,addr=10.0.0.13'
mount.nfs: prog 100003, trying vers=2, prot=6
mount.nfs: portmap query retrying: RPC: Program not registered
mount.nfs: prog 100003, trying vers=2, prot=17
mount.nfs: portmap query failed: RPC: Program not registered
mount.nfs: trying text-based options 'nfsvers=2,addr=10.0.0.13'
mount.nfs: prog 100003, trying vers=2, prot=6
mount.nfs: portmap query retrying: RPC: Program not registered
mount.nfs: prog 100003, trying vers=2, prot=17
mount.nfs: portmap query failed: RPC: Program not registered
mount.nfs: requested NFS version or transport protocol is not supported

No dice.  Anything left for me to try?