How to set up QNAP

I am trying to setup RaiDrive to use my QNAP via Raidrive instead of via WebDAV whereby I need to use a VPN service. But it keeps telling me it cannot connect. Is there a manual to set this up or does someone have ideas? I understand the basics but I am not a professional in this matter.

Hi~ @Stephen_de_Man ,

The QNAP storage in RaiDrive will be connected to the WebDAV protocol.
If you are using VPN in NAS itself, there is no way to connect without using the VPN service.
Please let us know if you have any questions.