It sounds like you purchased a New Producer account which includes unlimited ad-free streaming for $45/mo. This plan would apply to your New Livestream account not your original Livestream account which is most likely why you had a 50-viewer limit on any unverified channels in your account.
If you would like to request a refund please open a support ticket at the link below:
http://help.livestream.com/customer/portal/emails/new
-Ben
Livestream Support