Have you tested if the issue persists when using various connections? Make sure that the device is not plugged in a USB port while trying to connect remotely. I recommend you to perform a drive reset. You have two options: resetting manually or using the Dashboard. I leave some details in the document below. Please check the section 11.
http://products.wdc.com/support/kb.ashx?id=hzu8MB - My Passport Wireless Users Manual