Problem with Sonarr and External device

[Rallo00]

Hi everyone, I am stuck in a very stupid problem. This is my configuration os CasaOS:
VMware that hosts linux ubuntu server 22.04 LTS with CasaOS installed.
I have a 12TB hard drive connected via USB to my host and the drive is shared with ubuntu server. The drive is mounted in /mnt/hdstorage.
I shared /mnt/hdstorage with the container sonarr and I can see the content of the drive from Sonarr but cannot write on the drive (I need to import the TV series I already have).

I don't know if makes sense but the drive was formatted in NTFS because I used to use a windows 10 as a server.
To test this I've attached a pendrive formatted in ExFAT but same problem. To me seems it's not a filesystem problem. I can create directories from ubuntu server with no problem inside the drive therefore I think it's something Docker-related and unfortunately I am a complete newbie about the argument.

I've tried many things I found on the internet but not a single one has been helpful.

Can anyone help me with this please?
Thanks in advance.