I have 2 Dell laptops - one I got about a year ago and another I just got (both purchased directly from Dell). When I bought the laptop a year ago I bought a 1-year McAfee subscription. When I bought the laptop last month I bought a 3-year McAfee subscription. The subscription for the old laptop was due to expire and the cost to renew McAfee for another year was about $70. I called McAfee and was told that, rather than renew the 1-year subscription, I could just add a license to my 3-year subscription for about $15 per year.
After being on the phone for over an hour with McAfee customer service and technical support, they told me that because I had purchased my McAfee product directly from Dell - I could NOT just add a license. Because I purchased McAfee directly from Dell I did NOT have that option.
So bottom line is this - Do NOT buy your McAfee directly from DELL. If you have more than one computer it is much more expensive that way.
Unfortunatley, when you buy your McAfee products pre-loaded directly from Dell, there is no option to add a license. I tried the steps you listed (log in, go to products and subscriptions) but to no avail. There was no option to add a license. I called McAfee directly and spoke to both their Customer Service and Technical Support departments. They confirmed for me that when you buy McAfee pre-loaded directly from Dell you can not add a license. At least this is true for Dell computers purchased within the last year and a half - I can speak for earlier ones.
Thanks for your advice though - I appreciate it.