Hi,
Once a Domain name is registered it remain active through out the subscription period.
Remove the "index" file from
public_html/lottostrategys.com/ and the website cannot be found.
I would suggest you design a redirect page with a link to where you want the visitor to goto and publish it as the "index" page for
http://www.lottostrategys.com/ and leave it there until the domain expires.
Secondly I suggest you use Blue FTP and remove all the other pages from the website too.
Your second problem maybe your ISP connection problem or a Browser problem or your Anti-Virus internet suite software as all the browsers had up their security against undesiorus websites.