Cumbersome registration / activation

I use Norton for several years without any problems - thus fundamentally but 5 points for the program a deduction because of the cumbersome online registration - taken for some reason was always the registration code only after repeated input - also is the code (specifically 0, O, 8 , B) is often very difficult to read, or only with "trial - error" input procedure. From the CD no installation was possible - it was immediately downloaded from the Internet - which for me is incomprehensible - for what I buy a CD ??? Ultimately, however, I was able to install with a little more time every 3 Pc places.