Unknown_User

I got x-force for 32-bit AutoCAD 2012. I learned how to generate the activation code, but I don't know how to use it exactly. First I pasted request code from acad to x-force, then pressed "generate"-button, and x-force gives quite long activation code in two lines, copied and pasted.Then the screen says registration activation error 0015.111 .How to get activated.What is that error.I tried so many times.