Welcome to the McAfee Communities. First if I may, for your Privacy/Safety. It is recommended that you refrain from posting your personal Email Address. It would expedite your assistance in this matter, if you would inform us which McAfee Product you purchased?
There are different Links/Avenues to properly achieve your Download/Installation/Activation.
For one example being ; http://www.mcafee.com/mav/retailcard
As you can see, this is for McAfee Anti-Virus Plus. Hopefully someone will spot this thread,and be of further assistance. Again, please kindly provide the individual McAfee Product you wish to be assisted with.
All the very best,
In these situations
Best to call customer service here
Also maybe this applicable as well