I open an account for that domain at my host's cPanel
I install WP on it, got the 'successful installed' mail
site seems to have the OLD site files, it already has a a site on it with pages and all ...when i try to log in the wp-admin, it just redirect me to the homepage.
when I added the domain to my host, i did it as "www.site.com" (with www) and when I install WP using those cPanel scripts, it only gave me the choise to install it on "http://site.com", why is that and is that going to be a problem if I want to use the www version?
Without knowing the domain it isn't easy to help here, but I have a suspicion as to what may have happened:
Check the whois of your domain and the account at GoDaddy to see if your domain is still in it, the original registrant might have come back and renewed it. In this case GoDaddy would just be giving you a refund for your purchase and return the domain to the original owner.
This can happen in GoDaddy's expired auctions.
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