Cubase LE4 activation problem

I’ve recently bought audio interface Lexicon Alpha Studio which came with Cubase LE4 installation disc and serial number for that application in the box. Everything had to be great but apparently it isn’t. I followed all instructions to activate my product like creating MySteinberg account and so on, but every time when I try to put my Cubase LE4 serial number I get an error “This Download Access Code does not exist” instantly or neverending waiting response from the activating script. I tried changing internet browsers, turning off Adblock, changing timezones, logging in and out to MySteinberg account. What else can I do? Please help.

What serial number are you trying to put there? I ran Cubase LE4 to my new computer recently as well (had it years ago already on a different computer) and all that it asked when activating was Soft-eLicenser and Activation Code which was sent via email.