You need to create an account first then apply to exhumed division(XB1). If for some reason it does not work, just apply to the xb1 free agent. If you are applying for the 360 side of things (both are diamond) then just apply for xbox 360 free agent. Make sure to put HG BEASTMODE as a reference name so I know who came from where.
You can also contact me on XBL if you have any issues. I check it throughout the day via smartglass.