But as you can see:
you have exported all of these as “ro” → read only
… the server says: you may look at it, but not change anything, essentially
no matter what the permissions on your mountpoint are
actually: not all
not this one:
sshfs would perhaps have been easier?
but you are almost there, I think 
imarco
42
It was in my qnap administration page: it was on read only; i change it and it’s ok!
Thanks again! 