nfs mount problem for home directory (ReadyNas 104 OS 6.10.2)

Hi

since a short while - probably after update to OS 6.10.2 - I have aproblem mounting my home directory on my Ready NAS104 via NFS.
As a rule only NFS access to my home directory on the NAS is allowed.

NFS mounting attemps of my home folder are rejected. All the other shares mounted via NFS work fine
However after I change the FTP acces of the home folder via the admin web interface home folder NFS mount works up to the next reboot of the NAS.
It does not matter if I change the FTP access for the home folder from 'on' to 'off' or vice versa. I do not have to do this change of the FTP access from the computer which mounts the home directory. Whith FTP Acces 'on' the web interface shows 'admin' read/write' as access right and with FTP access 'off' is shows 'not shared'
In 2016 had the same problem with OS 6.6.0. As far as I remember it disappeared after a OS update.
Does anyone have the same problem? Or does anyone know a work arround ?

To me this is somewhat annoying since I automatcally shut down my NAS at night. So every day I toggle the FTP acces righ for my home folder from some other PC before I start my 'work' PC.