30 day trial period

I just recently downloaded Norton360 30 day trial period, however after i installed it, and did the activation, it said that it was expired. and when i looked at my account it showed me using NIS. I dont want NIS, I would like to use N360. i even deleted NIS from my account, at least i hope it is. to see if it works but im being told i have no installs left and i need to purchase a new key.

Any help on what i can do to get the 30 day trial for N360? thanks