WORM prevents anyone from modifying or deleting files or folders in the shared folder. A shared folder with WORM enabled can only be deleted if the WORM type is Enterprise.

https://docs.qnap.com/operating-system/quts-hero/5.2.x/en-us/removing-shared-folders-FD341FFC.html

When you delete a shared folder, the data will also be deleted.

Check if you can copy the data in the faulty folder to another location.

https://www.qnap.com/en/how-to/faq/article/how-to-access-qnap-nas-file-system-by-winscp

WORM prevents anyone from modifying or deleting files or folders in the shared folder – > You cannot remove the files

WORM prevents anyone from modifying or deleting files or folders in the shared folder​​​​​​​ – > Why you want moving files to a WORM folder

Please visit the link to know WORM.

https://docs.qnap.com/operating-system/quts-hero/5.2.x/en-us/creating-a-shared-folder-C82DC1EB.html

https://www.qnap.com/en/how-to/faq/article/how-is-a-worm-retention-period-counted-in-quts-hero-and-qes

https://www.qnap.com/en/how-to/faq/article/why-am-i-still-able-to-delete-files-in-a-worm-shared-folder

When you delete a shared folder, the data will also be deleted.

Check if you can copy the data in the faulty folder to another location via WinSCP

https://www.qnap.com/en/how-to/faq/article/how-to-access-qnap-nas-file-system-by-winscp

WORM prevents anyone from modifying or deleting files or folders in the shared folder – > You cannot remove the files

WORM prevents anyone from modifying or deleting files or folders in the shared folder – > Why you want moving files to a WORM folder

Please visit the link to know WORM.

https://docs.qnap.com/operating-system/quts-hero/5.2.x/en-us/creating-a-shared-folder-C82DC1EB.html

https://www.qnap.com/en/how-to/faq/article/how-is-a-worm-retention-period-counted-in-quts-hero-and-qes

https://www.qnap.com/en/how-to/faq/article/why-am-i-still-able-to-delete-files-in-a-worm-shared-folder