Unable to share a NTFS partition as read-write in samba (reloaded)

I am forced to write again about this topic because after having solved the issue it is reappeared again, inexplicably.
Briefly: I have a usb disk attached to my mi mini wifi router. The disk has two partitions; the first one is ntfs (which I want to stay with for compatibility purposes), the second one is ext4. When I access both partitions via ssh, I am able to read and write without any problem.
But when I try to share the first partition via sambashare, I get read-only access.

I mount the partition via command:
mount -t ntfs-3g -o rw,uid=65534,user_id=65534 /dev/sda1 /mnt/sda1.

Output of mount command:
/dev/sda1 on /mnt/sda1 type fuseblk (rw,relatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096)

Content of /etc/config/samba:

config samba
        option name 'Lede'
        option description 'Lede'
        option autoshare '1'
        option homes '0'
        option workgroup 'WORKGROUP'

config sambashare
        option read_only 'no'
        option guest_ok 'no'
        option path '/mnt/sda1'
        option name 'part1'

Contents of /etc/samba/smb.conf:

        netbios name = Lede
        display charset = UTF-8
        interfaces = lo br-lan
        server string = Lede
        unix charset = UTF-8
        workgroup = WORKGROUP
        bind interfaces only = yes
        deadtime = 30
        enable core files = no
        invalid users = root
        local master = no
        map to guest = Bad User
        max protocol = SMB2
        min protocol = SMB2
        min receivefile size = 16384
        null passwords = yes
        passdb backend = smbpasswd
        security = user
        smb passwd file = /etc/samba/smbpasswd
        use sendfile = yes
        browseable = yes
        writeable = yes

        path = /mnt/sda1
        read only = no
        guest ok = no

How can I solve this annoying issue?

I have a kimax H1 and I have seen a firmware from you for this device. All the links are dead. can you provide some new links?
Also I can't activate the repeater wifi function, can you help.
And for the last, How mount the HDD inside the enclosure, for samba sharing.
Thnaks for your help.

This topic is for samba only.

Please open a new topic for any questions not related to samba.