Norton Computer Tune Up came with my new renewal of Norton Security Premium (6/28/17). When I try to activate Tune Up, it keeps saying invalid code. I have painstakingly gone over the code as I transfer it from the card to the computer. The cryptic code underneath that field has been entered correctly. I saw a lot of people on the 'net with the same problem. I'm using Win10 64-bit. The Norton Security product itself works fine. Any ideas? Thanks in advance.
Richard