WD My CLoud EX 4 (wdbwwd0000nbk-eeue) and NFS

Hello!
I have a device wdbwwd0000nbk-eeue
I need to somehow mount NFS. How to do it?

With these settings there is no connection.
If you run the showmount -e 192.168.1.9
the output is: clnt_create: RPC: Port mapper failure - Timed Out

iscsi I earned without any problems

p.s.

exportfs -v
exportfs: could not open /var/lib/nfs/.etab.lock for locking: errno 2 (No such file or directory)

root@WDMyCloudEX4 / # ls -l /var/lib/
drwxr-xr-x 2 root root 1024 Mar 4 08:13 dpkg

The EX4 doesn’t support nfs.

omg…
What he does not know how?
In various written resources that can EX4 NFS …

WD removed NFS capability back in 2014 firmware release.

But why is it done?
In the old firmware to roll just will not … If at all possible…