I seem to have solved my problem.
What I did, was go login via FTP to my web host. Previously, under the Public_html folder existed two items: the Showkase directory folder which has my website, and another htaccess.html file. To rectify my problem, I simply moved all of the files from the showkase directory, and dropped them back into my public_html directory. I then deleted the directory labeled showkase altogether.
After that, when accessing my url from a browser, I was prompted by the showkase app, telling me it needed to be properly setup. Now, for the first time in this process, I could finally delete the url extension in the box labeled "path to your website folder", after which I was given a confirmation message saying my website was setup properly. Everything seems to work smoothly now, no index page when I access my url from a browser.