Shared usb-drive/ntfs/ksmbd: how to solve issue with non-international characters in filenames?

Fairly new user to openwrt.
Just installed shared usb NTFS drive according to official instructions on Quick Start for Adding a USB drive and ksmbd

Basically the setup works: usb-drive is recognized, its files are shared and accessed over lan by a win10 computer.

However: filenames containing some non-international character does not show, or characters i filenames gets rewritten, etc.

File/foldernames created on Win10, drive formatted NTFS. File/foldernames are visibile on Win10, some characters in filenames had been rewritten in Openwrt when usb-drive was checked directly on Win10 again.

Example:

  • A folder named "Tři oříšky pro Popelku" present on the drive does not show up when accessing openwrt over lan, but folder still exists when drive is plugged directly into Win10.

  • a txt-file (ie a plain text file) named "Tři oříšky pro Popelku.txt" got rewritten to "Tři oříšky pro Popelku.txt" when drive was accessed over lan.

  • Examples of other characters which not show properly are: å, ä, ö (all typed directly on keyboard)

After some research, I added a few lines to ksmbd template at Openwrt -> Network Shares -> Ksmbd/Kmod Version 3.5.3/6.6.73:

mangled names = no
dos charset = CP850
unix charset = UTF-8

This did not solve folder not showing.
Please respect my understanding of linux is limited.
Any thoughts or help greatly appreciated