Can't move / copy files to SecureAccess on Mac

Recently got a 128GB Ultra Luxe 3.1 flash drive, with SecureAccess on it (but only for Windows). And it works fine in Windows. But I also have a Macbook, so I downloaded SecureAccess 3 for Mac and installed it on the flash drive. Unfortunately, it doesn’t work. Can’t copy files to it, can’t make new folders. Can’t do anything but open the application.

Does anyone know what the problem is?

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