If I have unlimited domains now, why does it want me to pay again for a second one?

[weaknwimpy]

My host server is HostGater and I have one website and 2 domain names. I have just recently bought the 2nd one and not sure what I am going to do with it. I have added it has an addon and have redirected it to my first domain names specific category.

Now when I type in the new domain name, it takes me to godaddy saying I have registered my domain, now put it to work. I then am promted to pay 71.88 for 1 year.

I use to have the hatchling plan - single domain, unlimited disk space and bandwidth. Now I have the baby plan - unlimited domains, unlimited disk space and bandwidth.

If I have unlimited domains now, why does it want me to pay again for a second one?

Note: I only have wordpress and a wordpress theme for the first website installed. For the second domain name, I only have the domain name so far.
Psychic Computer Repair® - GoDaddy is charging and I thought i would get a quicker response here. And it's more like the Hostgator/GoDaddy sites are causing more confusion than my actual questions.