Second Website

I’m trying to establish a second website with the URL lessonplanondemand.com. But after I upload the index page and type the new homepage address in my browser, it pulls up the index page from my FIRST website at trinitytutors.com instead. Why is this? When I created a second website a year or two ago at narrowgatetrading.com, there were no problems at all and everything worked smoothly as could be, without any glitches. What happened?