scdabe on "Multiple sites cannot see the template"

Good day; I am new to using Wordpress. I have 3 domain names/websites under the same Netfirms account. I downloaded 3 wordpress files, one for each website. I then loaded 2 or 3 templates to tryout. I can see the themes in "manage themes" and I have activated one in each (NEWP is an example template). The problem is that when I open them to customize they do not look like the theme at all. There are no photos or format that resembles the template. Although sometimes the first listed website does show the original template the other two do not. I am able to make changes to the text/title etc but it does not look in any way like the template. Am I only allowed to have one website operatiing with wordpress per hosting?
Thanks SCDABE