Can't drag files onto mpw while connected wirelessly

When mpw is connected to my wireless network, it will not allow me to drag file onto the mpw drive. I get access denied…you do not have permission to… I connected to mpw via its wifi network-then connected mpw to my network as per instructions. I can see and open all the files on the drive, but can’t add any new ones. If I plug in using the provided usb cable i am able to drag and drop no problem. Help!!

Hello, I have the drive connected and I am able to access the drive.

How are you trying to connect to the hard drive? What I did is that I pressed the Windows Key and the letter R at the same time and typed in \\ and I gained access to the drive.