DVR File Permissions

Help, I have a WD PR4100 NAS with a PLEX server app coming preinstalled on the NAS. Updated Plex to the latest version.

The problem I have is trying to delete and/or move files with Windows Explorer that were saved to the NAS by the Plex DVR app.
Error: Your need Permissions to perform this action.
your require permissions from NAS\nobody to make changes to this file.

Any ideas?

Why are you trying to move them?

You would need to connect as Admin, the NAS should have a browser/file explorer that would allow you to.