How do I bypass the activation code on a nextbook tablet

Any way to assist me with the Activation Code for my Nextbook Ares 10A? I've called the manufacturer and was told that Walmart puts the Activation Code on them with reference to the DiSa code on the box. I have the DiSa code, but the "getmycode.com" site tells me the tablet was purchased from an Unauthorized retailer. What can I do to get this enabled? Any way to assist me with the Activation Code for my Nextbook Ares 10A? I've called the manufacturer and was told that Walmart puts the Activation Code on them with reference to the DiSa code on the box. I have the DiSa code, but the "getmycode.com" site tells me the tablet was purchased from an Unauthorized retailer. What can I do to get this enabled?