Can I transfer my Office for mac 2011 H&B to a new macbook air

Just bought the new MBA and want to utilize the office for mac 2011 I bought online at the beginning of last year.

I know there are tons of threads on this topic but none of them worked.

Most MVP from support.microsoft say that i just need to install it and then utilize the old product key but does not work. this is what I get:

- i am required to fill a form with product key+language+verification code

- i am prompted that for my product key ithere is an H&M office mac 2011 available

- I click continue and I get again the initial form to be refilled.. if I do it again, it simply go to the same form to be filled

can anyone help? 

thanks

sal