The 404 at your installation root is to discourage bots from crawling your FunnelFlux installation.

Your dashboard is located at yourdomain.tld/admin/

You can change the default behavior by editing the file includes/appConfig.php 

In this file, you will see a line such as the one below:

const DEFAULT_URL = '';

If you set a URL instead of the empty value, your install root will redirect to that URL instead of showing the 404.

For example:

const DEFAULT_URL = 'http://yourdomain.tld/blog';

...would redirect to your blog.

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